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  • atariarchives.org atariarchives.org makes books, information, and software for Atari and other classic computers available on the Web.
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  • Bookboon: IT & Programming Cookie required. (email address requested , not required)
  • Cheat Sheets (Free)
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  • conceptf1.blogspot.com
  • Free Smalltalk Books, collected by Stéphane Ducasse
  • Free Tech Books
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  • IBM Redbooks
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  • JSBooks - directory of free javascript ebooks
  • Learn X in Y minutes
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  • Microsoft Guides to Software
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  • Microsoft Technologies 1, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, Office365, etc. collection by Eric Ligman
  • Microsoft Technologies 2, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, etc. collection by Eric Ligman
  • Microsoft Technologies 3, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, etc. collection by Eric Ligman
  • O'Reilly's Commons
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  • Red Gate Books
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  • TechBeamers.com
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  • The Definitive C++ Book Guide and List
  • Theassayer.org
  • tutorialspoint
  • Graphics Programming

  • Blender 3D: Noob to Pro - Wikibooks
  • Computer Graphics from scratch - Gabriel Gambetta ( 🚧 in process )
  • DirectX manual (draft)
  • GPU Gems
  • Graphics Programming Black Book - Michael Abrash
  • Introduction to Modern OpenGL
  • Learn OpenGL - Joey de Vries
  • Learning Modern 3D Graphics Programming - Jason L. McKesson (draft)
  • OpenGL - Concepts and illustrations.
  • ShaderX series - Wolfgang Engel
  • Tutorials for modern OpenGL
  • WebGL Insights - Patrick Cozzi and Contributors
  • Graphical User Interfaces

  • Programming with gtkmm 3
  • Search User Interfaces - Marti A. Hearst
  • The GLib/GTK+ Development Platform - Sébastien Wilmet (PDF)
  • GraphQL

  • Fullstack GraphQL
  • Language Agnostic

    Algorithms & Data Structures

  • A Field Guide To Genetic Programming - Riccardo Poli et al.
  • Algorithmic Graph Theory
  • Algorithms - Wikibooks
  • Algorithms, 4th Edition - Robert Sedgewick and Kevin Wayne
  • Algorithms and Automatic Computing Machines (1963) - B. A. Trakhtenbrot
  • Algorithms and Complexity - Herbert S. Wilf (PDF)
  • Algorithms Course Materials - Jeff Erickson
  • Analysis and Design of Algorithms - Sandeep Sen, IIT Delhi
  • Animated Algorithm and Data Structure Visualization (Resource)
  • Annotated Algorithms in Python: Applications in Physics, Biology, and Finance - Massimo di Pierro
  • Binary Trees (PDF)
  • Clever Algorithms - Jason Brownlee
  • CS Unplugged: Computer Science without a computer
  • Data Structures - Prof. Subhashis Banerjee, IIT Delhi
  • Data Structures (Into Java) - Paul N. Hilfinger (PDF)
  • Data Structures and Algorithms: Annotated Reference with Examples - G. Barnett and L. Del Tongo (PDF)
  • Data Structures Succinctly Part 1, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Data Structures Succinctly Part 2, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Elementary Algorithms - Larry LIU Xinyu
  • Foundations of Computer Science - Al Aho and Jeff Ullman
  • Geometry Algorithms - Dan Sunday
  • Lectures Notes on Algorithm Analysis and Computational Complexity (Fourth Edition) - Ian Parberry (use form at bottom of license)
  • LEDA: A Platform for Combinatorial and Geometric Computing - K. Mehlhorn et al.
  • Linked List Basics (PDF)
  • Linked List Problems (PDF)
  • Matters Computational: Ideas, Algorithms, Source Code (PDF)
  • Open Data Structures: An Introduction - Pat Morin
  • Planning Algorithms
  • Problems on Algorithms (Second Edition) - Ian Parberry (use form at bottom of license)
  • Purely Functional Data Structures (1996) - Chris Okasaki (PDF)
  • Sequential and parallel sorting algorithms
  • Text Algorithms (PDF)
  • The Algorithm Design Manual
  • The Art of Computer Programming - Donald Knuth (fascicles, mostly volume 4)
  • The Design of Approximation Algorithms (PDF)
  • The Great Tree List Recursion Problem (PDF)
  • Think Complexity (PDF)
  • Cellular Automata

  • A New Kind of Science - Stephen Wolfram
  • Cellular Automata Books
  • Cloud Computing

  • Designing Distributed Systems *(account required)
  • Learn Azure in a Month of Lunches - Iain Foulds (PDF)
  • Monitoring Modern Infrastructure (account required)
  • Multi-tenant Applications for the Cloud, 3rd Edition
  • OpenStack Operations Guide
  • The Developer’s Guide to Azure
  • Competitive Programming

  • Competitive Programmer's Handbook - Antti Laaksonen (PDF)
  • Competitive Programming, 1st Edition (PDF)
  • Compiler Design

  • An Introduction to GCC - Brian Gough
  • Basics of Compiler Design (Anniversary Edition) - Torben Mogensen
  • Compiler Construction (PDF)
  • Compiler Design in C (1990) - Allen Holub, Prentice Hall
  • Compiler Design: Theory, Tools, and Examples, C/C++ Edition - Seth D. Bergmann
  • Compiler Design: Theory, Tools, and Examples, Java Edition - Seth D. Bergmann
  • Compiling Scala for the Java Virtual Machine - Michel Schinz (PDF)
  • Compiling Techniques (1969) - F.R.A. Hopgood, Macdonald
  • Crafting Interpreters ( 🚧 ) - Bob Nystrom (HTML)
  • Implementing Functional Languages: A Tutorial - Simon Peyton Jones, David Lester
  • Let's Build a Compiler (PDF)
  • Practical and Theoretical Aspects of Compiler Construction (class lectures and slides)
  • Computer Science

  • Computer Science I - Draft - Dr. Chris Bourke (PDF) ( 🚧 in process )
  • Computer Science II - Draft - Dr. Chris Bourke (PDF) ( 🚧 in process )
  • Computer Vision

  • Computer Vision - Dana Ballard, Chris Brown
  • Computer Vision: Algorithms and Applications - Richard Szeliski
  • Computer Vision: Models, Learning, and Inference - Simon J.D. Prince
  • Programming Computer Vision with Python - Jan Erik Solem
  • Database

  • Big Data Now: Current Perspectives from O'Reilly Radar
  • Database Explorations (PDF)
  • Database Fundamentals (PDF)
  • Databases, Types, and The Relational Model: The Third Manifesto (PDF)
  • Foundations of Databases
  • Readings in Database Systems, 5th Ed.
  • Temporal Database Management - Christian S. Jensen
  • The Theory of Relational Databases
  • What is Database Design, Anyway?
  • Datamining

  • A Programmer's Guide to Data Mining - Ron Zacharski (Draft)
  • Data Jujitsu: The Art of Turning Data into Product (email address requested , not required)
  • Data Mining Algorithms In R - Wikibooks
  • Internet Advertising: An Interplay among Advertisers, Online Publishers, Ad Exchanges and Web Users (PDF)
  • Introduction to Data Science - Jeffrey Stanton
  • Mining of Massive Datasets
  • School of Data Handbook
  • Theory and Applications for Advanced Text Mining
  • Information Retrieval

  • Information Retrieval: A Survey (PDF)
  • Introduction to Information Retrieval
  • Licensing

  • Creative Commons: a user guide - Simone Aliprandi
  • Open Source Licensing Software Freedom and Intellectual Property Law - Lawrence Rosen
  • The Public Domain: Enclosing the Commons of the Mind - James Boyle
  • Machine Learning

  • A Brief Introduction to Machine Learning for Engineers - Osvaldo Simeone (PDF)
  • A Brief Introduction to Neural Networks
  • A Course in Machine Learning (PDF)
  • A First Encounter with Machine Learning (PDF)
  • An Introduction to Statistical Learning - Gareth James, Daniela Witten, Trevor Hastie and Robert Tibshirani
  • Bayesian Reasoning and Machine Learning
  • Deep Learning - Ian Goodfellow, Yoshua Bengio and Aaron Courville
  • Gaussian Processes for Machine Learning
  • Information Theory, Inference, and Learning Algorithms
  • Introduction to Machine Learning - Amnon Shashua
  • Learn Tensorflow - Jupyter Notebooks
  • Learning Deep Architectures for AI (PDF)
  • Machine Learning
  • Machine Learning, Neural and Statistical Classification
  • Neural Networks and Deep Learning
  • Probabilistic Models in the Study of Language (Draft, with R code)
  • Reinforcement Learning: An Introduction (Draft) - Richard S. Sutton, Andrew G. Barto (PDF)
  • Speech and Language Processing (3rd Edition Draft) - Daniel Jurafsky, James H. Martin (PDF)
  • The Elements of Statistical Learning - Trevor Hastie, Robert Tibshirani, and Jerome Friedman
  • The LION Way: Machine Learning plus Intelligent Optimization - Roberto Battiti, Mauro Brunato (PDF)
  • The Python Game Book
  • Mathematics

  • A First Course in Linear Algebra - Robert A. Beezer
  • Advanced Algebra - Anthony W. Knapp (PDF)
  • An Introduction to the Theory of Numbers - Leo Moser (PDF)
  • Basic Algebra - Anthony W. Knapp (PDF)
  • Basics of Algebra, Topology, and Differential Calculus (PDF)
  • Bayesian Methods for Hackers - Cameron Davidson-Pilon
  • Book of Proof - Richard Hammack (PDF)
  • Calculus - Gilbert Strang (PDF)
  • Calculus Made Easy - Silvanus P. Thompson (PDF)
  • Category Theory for the Sciences
  • CK-12 Probability and Statistics - Advanced
  • Collaborative Statistics
  • Computational and Inferential Thinking. The Foundations of Data Science
  • Computational Geometry
  • Concepts & Applications of Inferential Statistics
  • Differential Equations - Paul Dawkins (PDF, use form to download)
  • Elementary Differential Equations - William F. Trench (PDF)
  • Essentials of Metaheuristics - Sean Luke
  • Graph Theory
  • Introduction to Probability - Charles M. Grinstead and J. Laurie Snell
  • Introduction to Probability and Statistics Spring 2014
  • Introduction to Proofs - Jim Hefferon
  • Introduction to Statistical Thought - Michael Lavine
  • Kalman and Bayesian Filters in Python
  • Knapsack Problems - Algorithms and Computer Implementations - Silvano Martello and Paolo Toth
  • Lecture Notes of Linear Algebra - Dr. P. Shunmugaraj, IIT Kanpur (PDF)
  • Linear Algebra - Dr. Arbind K Lal, IIT Kanpur (PDF)
  • Linear Algebra (PDF)
  • Linear Algebra by Jim Hefferon - Jim Hefferon
  • Mathematical Logic - an Introduction (PDF)
  • Mathematics, MTH101A - P. Shunmugaraj, IIT Kanpur
  • Non-Uniform Random Variate Generation - Luc Devroye (PDF)
  • Number Theory - Holden Lee MIT
  • OpenIntro Statistics
  • Ordinary Differential Equations - Wikibooks
  • Power Programming with Mathematica - David B. Wagner
  • Probability and Statistics Cookbook
  • Probability and Statistics EBook
  • Statistics Done Wrong - Alex Reinhart
  • Think Bayes: Bayesian Statistics Made Simple - Allen B. Downey
  • Think Stats: Probability and Statistics for Programmers - Allen B. Downey (using Python)
  • Mathematics For Computer Science

  • Discrete Structures for Computer Science: Counting, Recursion, and Probability - Michiel Smid
  • 2016 European Software Development Salary Survey (email address requested , not required)
  • 2016 Software Development Salary Survey (email address requested , not required)
  • 97 Things Every Programmer Should Know - Extended (Leanpub account or valid email requested)
  • A MACHINE MADE THIS BOOK ten sketches of computer science - JOHN WHITINGTON (PDF)
  • A Mathematical Theory of Communication - Claude E.Shannon
  • Ansible Up & Running (first three chapters) (account required)
  • Asterisk™: The Definitive Guide
  • Barcode Overview (PDF)
  • Bitcoin and Cryptocurrency Technologies - Arvind Narayanan, Joseph Bonneau, Edward Felten, Andrew Miller, Steven Goldfeder (PDF)
  • Come, Let's Play: Scenario-Based Programming Using Live Sequence Charts
  • Communicating Sequential Processes - Tony Hoare (PDF)
  • Computer Musings (lectures by Donald Knuth)
  • Confessions of an Unintentional CTO: Lessons in Growing a Web App - Jack Kinsella
  • Continuous Delivery and DevOps: A Quickstart guide - Paul Swartout, Packt. (email address requested , not required)
  • CS For All
  • Culture & Empire: Digital Revolution (PDF)
  • Design With FontForge
  • Designing for Performance - Lara Hogan
  • Designing Interfaces - Jennifer Tidwell
  • DevDocs - Documents for Developers in 1 place
  • DevOps For Dummies (IBM Edition) (PDF)
  • Digital Signal Processing For Communications
  • Digital Signal Processing For Engineers and Scientists
  • Distributed systems for fun and profit
  • Docker Jumpstart
  • "DYNAMIC LINKED LIBRARIES": Paradigms of the GPL license in contemporary software - Luis A. Enríquez
  • Essential Image Optimization - Addy Osmani
  • Flow based Programming
  • Foundations of Programming (PDF)
  • Game Programming Patterns - Bob Nystrom
  • Getting Real
  • Getting Started with Unity 5 - Dr. Edward Lavieri, Packt. (email address requested , not required)
  • Hacknot: Essays on Software Development - Ed Johnson
  • High-Performance Scientific Computing (class lectures and slides)
  • How Computers Work - R. Young
  • How to Become a Programmer (PDF)
  • How to Think Like a Computer Scientist - Peter Wentworth, Jeffrey Elkner, Allen B. Downey, and Chris Meyers
  • Image Processing in C: Analyzing and Enhancing Digital Images - Dwayne Phillips
  • Information Technology and the Networked Economy (PDF)
  • IRPF90 Fortran code generator - Anthony Scemama
  • Learn Programming - Antti Salonen
  • Learn to Program
  • Learning 30 Technologies in 30 Days: A Developer Challenge - Shekhar Gulati
  • Learning Docker - Pethuru Raj, Jeeva S. Chelladhurai & Vinod Singh, Packt. (email address requested , not required)
  • Linked Data Patterns: A pattern catalogue for modelling, publishing, and consuming Linked Data - Leigh Dodds, Ian Davis
  • Magic Ink: Information Software and The Graphical Interface - Bret Victor
  • Mastering Bitcoin - Unlocking digital currencies - Andreas M. Antonopoulos
  • Mobile Developer's Guide to the Galaxy (Leanpub account or valid email requested)
  • Modeling Reactive Systems with Statecharts
  • Mother Tongues of Computer Languages (PNG)
  • Networks, Crowds, and Markets: Reasoning About a Highly Connected World
  • Object-Oriented Reengineering Patterns - Serge Demeyer, Stéphane Ducasse and Oscar Nierstrasz
  • Open Government;Collaboration, Transparency, and Participation in Practice
  • Packt Publishing: A free book every day (PDF, ePub, Mobi, Kindle) (account required)
  • PDQ: Pretty Darn Quick: An Agile, All-Purpose Methodology - Jeff Franz-Lien (Leanpub account or valid email requested)
  • Philosophy of Computer Science (PDF)
  • PNG: The Definitive Guide
  • Pointers And Memory (PDF)
  • Practical Data Analysis - Hector Cuesta, Packt. (email address requested , not required)
  • Practical Responsive Typography - Dario Calonaci, Packt. (email address requested , not required)
  • Principles of Computer System Design (PDF)
  • Procedural Content Generation in Games - Noor Shaker, Julian Togelius, Mark Nelson
  • Programming with Unicode
  • Real-World Maintainable Software (email address requested , not required)
  • Record-Playback Test Automation: Sahi & Selenium IDE: Critical Evaluation of Record-Playback Automation Tools - Shashikant Jagtap (Leanpub account or valid email requested)
  • Security Engineering
  • Small Memory Software
  • SVG Essentials
  • The Quest for Artificial Intelligence: A History of Ideas and Achievements - Nils J. Nilsson (PDF)
  • Trends Shaping the London Tech Scene (email address requested , not required)
  • What You Need to Know about Docker - Scott Gallagher, Packt. (email address requested , not required)
  • Coursera
  • FutureLearn
  • MIT OCW
  • NPTEL
  • openHPI
  • Platzi
  • Udacity
  • Networking

  • 802.11ac: A Survival Guide - Matthew Gast
  • An Introduction to Computer Networks (HTML, PDF, Kindle)
  • Bits, Signals, and Packets: An Introduction to Digital Communications and Networks
  • Code Connected vol.1 (PDF) (book on ZeroMQ)
  • Computer Networking : Principles, Protocols and Practice (HTML, ePub, PDF, Kindle)
  • Computer Networks: A Systems Approach - Larry Peterson and Bruce Davie (HTML, epub, mobi, PDF)
  • High-Performance Browser Networking - Ilya Grigorik
  • HTTP Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • HTTP2 Explained - Daniel Stenberg
  • IPv6 for IPv4 Experts - Yar Tikhiy (PDF)
  • The TCP/IP Guide
  • Understanding IP Addressing: Everything you ever wanted to know (PDF)
  • ZeroMQ Guide
  • Open Source Ecosystem

  • Data Journalism Handbook
  • Fintech, Open Source, and Emerging Markets Digital Banking for Everyone (email address requested , not required)
  • Free as in Freedom: Richard Stallman and the free software revolution - Sam Williams (PDF)
  • Free for All - Peter Wayner
  • Free Software, Free Society: Selected Essays of Richard M. Stallman
  • Getting Started with InnerSource (email address requested , not required)
  • Getting started with Open source development (PDF)
  • How to get started with open source (ePub & ODT)
  • Innovation Happens Elsewhere - Ron Goldman, Richard P. Gabriel
  • Open Advice: FOSS: What We Wish We Had Known When We Started
  • Open by Design (email address requested , not required)
  • Open Source in Brazil (email address requested , not required)
  • Producing Open Source Software - Karl Fogel
  • The Architecture of Open Source Applications: Vol. 1: Elegance, Evolution, and a Few Fearless Hacks; Vol. 2: Structure, Scale, and a Few More Feerless Hacks
  • The Art of Community - Jono Bacon (PDF)
  • The Cathedral and the Bazaar - Eric S. Raymond
  • The Future of the Internet - Jonathan Zittrain
  • The Open Source Way
  • The Wealth of Networks: How Social Production Transforms Markets and Freedom - Yochai Benkler
  • Operating systems

  • A short introduction to operating systems (2001) - Mark Burgess (PDF)
  • Computer Science from the Bottom Up
  • How to Make a Computer Operating System ( 🚧 in process )
  • How to write a simple operating system in assembly language - Mike Saunders (HTML)
  • Operating Systems and Middleware (PDF and LaTeX)
  • Operating Systems: Three Easy Pieces (PDF)
  • Practical File System Design: The Be File System - Dominic Giampaolo (PDF)
  • Project Oberon: The Design of an Operating System, a Compiler, and a Computer - Niklaus Wirth & Jürg Gutknecht (PDF)
  • The Art of Unix Programming - Eric S. Raymond
  • The Design and Implementation of the Anykernel and Rump Kernels - Antti Kantee
  • The little book about OS development - Erik Helin, Adam Renberg
  • The Little Book of Semaphores - Allen B. Downey
  • Think OS: A Brief Introduction to Operating Systems - Allen B. Downey (PDF)
  • UNIX Application and System Programming, lecture notes - Prof. Stewart Weiss (PDF)
  • Writing a Simple Operating System from Scratch - Nick Blundell (PDF)
  • Xv6, a simple Unix-like teaching operating system
  • Parallel Programming

  • High Performance Computing - Charles Severance & Kevin Dowd (PDF, ePUB)
  • High Performance Computing Training (LLNL materials)
  • High-Performance Scientific Computing (class lectures and slides)
  • Introduction to High-Performance Scientific Computing - Victor Eijkhout
  • Introduction to Parallel Computing - Blaise Barney
  • Is Parallel Programming Hard, And, If So, What Can You Do About It? - Paul E. McKenney
  • Programming on Parallel Machines; GPU, Multicore, Clusters and More - Norm Matloff Kerridge (PDF) (email address requested , not required)
  • The OpenCL Programming Book
  • Using Concurrency and Parallelism Effectively – I - Jon Kerridge (PDF) (email address requested , not required)
  • Using Concurrency and Parallelism Effectively – II - Jon
  • Partial Evaluation

  • Partial Evaluation and Automatic Program Generation - (PDF) Jones, Gomard and Sestoft
  • Professional Development

  • Apprenticeship Patterns: Guidance for the Aspiring Software Craftsman - David H. Hoover and Adewale Oshineye
  • Clean Code Developer: An initiative for more professionalism in software development ( 🚧 in process )
  • Confessions of an IT Manager (RedGate, By Phil Factor)
  • Don't Just Roll the Dice (PDF) (RedGate, By Neil Davidson)
  • How to Do What You Love & Earn What You’re Worth as a Programmer - Reginald Braithwaite
  • Professional Software Development For Students - Mike G. Miller
  • What I've Learned From Failure - Reginald Braithwaite
  • Programming Paradigms

  • Introduction to Functional Programming - J. Harrison
  • Mostly Adequate Guide to Functional Programming
  • Type Theory and Functional Programming
  • Regular Expressions

  • Learn Regex The Hard Way - Zed. A. Shaw
  • RexEgg
  • The 30 Minute Regex Tutorial - Jim Hollenhorst
  • The Bastards Book of Regular Expressions: Finding Patterns in Everyday Text - Dan Nguyen (Leanpub account or valid email requested)
  • Reverse Engineering

  • BIOS Disassembly Ninjutsu Uncovered 1st Edition - Darmawan Salihun (PDF)
  • Hacking the Xbox: An Introduction to Reverse Engineering - Andrew "bunnie" Huang
  • iOS App Reverse Engineering (PDF)
  • Reverse Engineering for Beginners - Dennis Yurichev (PDF)
  • Security

  • A Graduate Course in Applied Cryptography
  • Crypto 101 - Crypto for everyone
  • CryptoParty Handbook
  • Handbook of Applied Cryptography
  • How to deal with Passwords
  • Intrusion Detection Systems with Snort (PDF)
  • OpenSSL Cookbook
  • OWASP Testing Guide 4.0 (PDF)
  • OWASP Top 10 for .NET Developers
  • Security Engineering
  • Software Architecture

  • Agile Planning: From Ideas to Story Cards - Launch School
  • Architectural Styles and the Design of Network-based Software Architectures - Roy Thomas Fielding
  • Best Kept Secrets of Peer Code Review
  • Data-Oriented Design
  • Developing Reactive Microservices (email address requested , not required)
  • Domain Driven Design Quickly
  • DSL Engineering: Designing, Implementing and Using Domain-Specific Languages - Markus Voelter
  • Evolving Architectures of FinTech (email address requested , not required)
  • Exploring CQRS and Event Sourcing - (EPUB, PDF)
  • Guide to the Software Engineering Body of Knowledge
  • How to Design Programs
  • How to Write Unmaintainable Code
  • Kanban and Scrum - making the most of both
  • Kanban for skeptics - Nick Oostvogels (Leanpub account or valid email requested)
  • Microservice Databases: Migrating from Relational Monolith to Distributed Data (email address requested , not required)
  • Microservices AntiPatterns and Pitfalls (PDF)
  • Microservices in Production (email address requested , not required)
  • Microservices vs. Service-Oriented Architecture (PDF)
  • Migrating to Cloud-Native Application Architectures (email address requested , not required)
  • Naked objects - Richard Pawson (PDF)
  • OAuth - The Big Picture
  • Object-Oriented Reengineering Patterns - S. Demeyer, S. Ducasse and O. Nierstrasz
  • Practicing Domain-Driven Design - Part 1 - Scott Millett (Leanpub account or valid email requested)
  • Reactive Microservices Architecture (email address requested , not required)
  • Scrum and XP from the Trenches
  • Serverless apps: Architecture, patterns, and Azure implementation
  • Site Reliability Engineering
  • Software Architecture Patterns (email address requested , not required)
  • Software Engineering for Internet Applications
  • Test Driven Development, Extensive Tutorial - Grzegorz Gałęzowski
  • Web API Design
  • Working with Web APIs - Launch School
  • Your API Is Bad - Paddy Foran
  • Standards

  • Linux Standard Base
  • UNIX - The POSIX Standard - IEEE Std 1003.1
  • Theoretical Computer Science

  • Building Blocks for Theoretical Computer Science - Margaret M. Fleck
  • Category Theory for Computing Science (PDF)
  • Category Theory for Programmers - Bartosz Milewski (PDF)
  • Homotopy Type Theory: Univalent Foundations of Mathematics (PDF)
  • Introduction to Computer Science - Prof. Subhashis Banerjee, IIT Delhi
  • Introduction to Computing
  • Introduction to Theory of Computation - Anil Maheshwari and Michiel Smid (PDF)
  • Models of Computation - John E. Savage
  • Practical Foundations for Programming Languages, Preview - Robert Harper (PDF)
  • Principles of Programming Languages - Scott F. Smith
  • Programming and Programming Languages - Shriram Krishnamurthi
  • Programming in Martin-Löf's Type Theory - Bengt Nordstroem
  • Programming Languages: Application and Interpretation (2nd Edition) - Shriram Krishnamurthi
  • Programming Languages: Theory and Practice - Robert Harper (PDF)
  • Semantics with Applications: A Formal Introduction - Hanne Riis Nielson, Flemming Nielson
  • Structure and Interpretation of Computer Programs
  • Structure and Interpretation of Computer Programs
  • The Black Art of Programming - Mark McIlroy
  • Think Complexity - Allen B. Downey
  • Web Performance

  • Book of Speed - Stoyan Stefanov
  • High Performance Browser Networking - Ilya Grigorik
  • Mature Optimization - Carlos Bueno (PDF)
  • A Guide to Ada for C and C++ Programmers (PDF)
  • Ada Distilled (PDF)
  • Ada for the C++ or Java Developer - Quentin Ochem (PDF)
  • Ada Programming - Wikibooks
  • Ada Reference Manual - ISO/IEC 8652:2012(E) Language and Standard Libraries (PDF)
  • The Big Online Book of Linux Ada Programming
  • Agda Tutorial
  • Programming Language Foundations in Agda - Philip Wadler and Wen Kokke
  • Alef Language Reference Manual
  • Android

  • Agile Android Software Development - Etienne Savard (PDF, epub, mobi)
  • Android 4 App Development Essentials
  • Android 5 Programming by Example - Kyle Mew, Packt. (email address requested , not required)
  • Android NDK Beginner's Guide - Second Edition - Sylvain Ratabouil, Packt. (email address requested , not required)
  • Android NDK Game Development Cookbook - Sergey Kosarevsky & Viktor Latypov, Packt. (email address requested , not required)
  • Android Notes (PDF)
  • Android Programming Guide for Beginners (PDF - need email confirmation)
  • Android Programming Succinctly, Syncfusion ( PDF , Kindle ) (email address requested , not required)
  • CodePath Android Cliffnotes
  • Coreservlets Android Programming Tutorial
  • Expert Android and Eclipse development knowledge
  • Google Android Developer Training
  • RxJava for Android App Development (email address requested , not required)
  • Styling Android
  • The Busy Coder's Guide to Android Development (PDF - older versions)
  • Tutorial Point Android Tutorial (PDF)
  • A Practical Introduction to APL1 & APL2
  • A Practical Introduction to APL3 & APL4
  • Mastering Dyalog APL (PDF)
  • Arduino

  • Arduino Programming Notebook - Brian Evans
  • C Programming for Arduino - Julien Bayle, Packt. (email address requested , not required)
  • Introduction to Arduino
  • Introduction to Arduino : A piece of cake! - Alan G. Smith
  • ASP.NET MVC

  • ASP.NET MVC Music Store
  • Assembly Language

  • An introduction to reverse engineering for beginners
  • Assembly Language Succinctly (PDF)
  • PC Assembly Language - P. A. Carter
  • Professional Assembly Language (PDF)
  • Programming from the Ground Up (PDF)
  • Ralf Brown's Interrupt List
  • Software optimization resources - A. Fog
  • Wizard Code
  • x86-64 Assembly Language Programming with Ubuntu - Ed Jorgensen (PDF)
  • x86 Assembly - Wikibooks
  • Non-X86

  • Easy 6502 - Nick Morgan
  • Machine Code for Beginners [Z80 and 6502 CPUs] - Lisa Watts and Mike Wharton (PDF) (Scroll to bottom and click on book cover)
  • Machine Language for Beginners - Richard Mansfield [6502 CPU]
  • Programmed Introduction to MIPS Assembly Language
  • The Second Book of Machine Language
  • AutoHotkey

  • AHKbook - the book for AutoHotkey
  • AutoHotkey Official Documentation ( CHM )
  • Autotools

  • Autotools Mythbuster
  • GNU Autoconf, Automake and Libtool
  • A User's Guide for GNU AWK
  • An Awk Primer - Wikibooks
  • Awk - Bruce Barnett
  • Advanced Bash-Scripting Guide - M. Cooper (HTML)
  • Bash Guide for Beginners (2008) - M. Garrels (HTML)
  • Bash Notes (PDF)
  • Bash Notes for Professionals - Compiled from StackOverflow documentation (3.x) (PDF)
  • BASH Programming (2000) - Mike G. (HTML)
  • Bash Reference Manual (HTML)
  • Bash tutorial - Anthony Scemama (PDF)
  • BashGuide - Maarten Billemont (HTML) (PDF)
  • Conquering the Command Line - Mark Bates (HTML)
  • Getting Started with BASH (HTML)
  • Google Shell Style Guide - Paul Armstrong (HTML)
  • Introduction to the Command Line - Launch School (HTML)
  • Linux Fundamentals - Paul Cobbaut (PDF)
  • Linux Shell Scripting Tutorial - A Beginner's Handbook (2002) - Vivek G. Gite (HTML)
  • Linux Shell Scripting Tutorial (LSST) v2.0 - Vivek Gite (HTML)
  • Slackbook (2005) - Alan Hicks, Chris Lumens, David Cantrell and Logan Johnson (HTML, DocBook, Postscript, PDF)
  • The Bash Academy - Maarten Billemont (HTML)
  • The Linux Command Line - William E. Shotts, Jr. (PDF)
  • Writing Shell Scripts - William E. Shotts, Jr. (HTML)
  • Basic

  • 10 PRINT CHR$(205.5+RND(1)); : GOTO 10 - Nick Montfort, Patsy Baudoin, John Bell,Ian Bogost, Jeremy Douglass, Mark C. Marino, Michael Mateas, Casey Reas, Mark Sample, Noah Vawter
  • A beginner's guide to Gambas - John W. Rittinghouse (PDF)
  • Pick/Basic: A Programmer's Guide - Jonathan E. Sisk
  • Visual Basic Essentials
  • Object-Oriented Programming in the BETA Programming Language - Ole Lehrmann Madsen, Birger Møller-Pedersen, Kristen Nygaard
  • 256-Color VGA Programming in C - David Brackeen
  • A Tutorial on Pointers and Arrays in C - Ted Jensen (PDF, Zipped HTML)
  • An Introduction to C & GUI Programming - Simon Long (PDF)
  • Bare-metal programming for ARM - Daniels Umanovskis (PDF)
  • Beej's Guide to C Programming - B. Hall
  • Beej's Guide to Network Programming - Using Internet Sockets - B. Hall
  • Build Your Own Lisp
  • C Elements of Style - Steve Oualline
  • C for Python Programmers - Carl Burch
  • C Notes (PDF)
  • C Programming - Wikibooks
  • C Programming Boot Camp - Paul Gribble
  • Deep C
  • Essential C (PDF)
  • Everything you need to know about pointers in C - Peter Hosey
  • Functional C (1997) - Pieter H. Hartel, Henk Muller (PDF)
  • Learn to Code With C - The MagPi Essentials (PDF)
  • Modern C (PDF)
  • Object-Oriented Programming With ANSI-C (PDF)
  • Programming in C - Bharat Kinariwala & Tep Dobry
  • The C book
  • The Craft of Text Editing or A Cookbook for an Emacs - Craig A. Finseth
  • The Current C Programming Language Standard – ISO/IEC 9899:202x (C2x) - Open Standards Org - www.open-std.org (PDF)
  • The GNU C Programming Tutorial (PDF)
  • The little book about OS development - Erik Helin, Adam Renberg
  • The New C Standard - An Economic and Cultural commentary (2009) - Derek M. Jones (PDF)
  • TONC GBA Programming - Game Boy Advance Development
  • C Sharp

  • C# Essentials
  • C# Notes (PDF)
  • C# Notes for Professionals - Compiled from StackOverflow documentation (3.x)
  • C# Programming - Wikibooks
  • C# Yellow Book (intro to programming)
  • Creating Mobile Apps with Xamarin.Forms C#
  • Daily Design Patterns (PDF)
  • Data Structures and Algorithms with Object-Oriented Design Patterns in C# - Bruno Preiss
  • Dissecting a C# Application - Christian Holm, Bernhard Spuida, Mike Kruger
  • Fundamentals of Computer Programming with C# - Svetlin Nakov
  • High level asynchronous programming with Reactive Extensions - Emil Petro
  • Introduction to Rx
  • Object Oriented Programming using C# - Simon Kendal, Bookboon. (email address requested , not required)
  • Threading in C#
  • Xamarin Cross-Platform Development Cookbook - George Taskos, Packt. (email address requested , not required)
  • C++ Annotations
  • C++ Core Guidelines - Editors: Bjarne Stroustrup, Herb Sutter
  • C++ GUI Programming With Qt 3
  • C++ Language
  • C++ Notes (PDF)
  • C++ Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • C++ Today (email address requested , not required)
  • C++ Tricks
  • CS106X Programming Abstractions in C++
  • Financial Numerical Recipes in C++ - Bernt Arne Ødegaard
  • Game Programming Patterns
  • Google's C++ Style Guide
  • How to make an Operating System - Samy Pesse
  • How To Think Like a Computer Scientist: C++ Version - Allen B. Downey
  • Introduction to Design Patterns in C++ with Qt (PDF)
  • Joint Strike Fighter, C++ Coding Standards, by Bjarne Stroustrup (PDF)
  • Learn C++. (PDF, Online)
  • Matters Computational: Ideas, Algorithms, Source Code, by Jorg Arndt (PDF)
  • Open Data Structures (In C++) (PDF)
  • Practical C++ Metaprogramming (email address requested , not required)
  • Software Design Using C++ - Br. David Carlson and Br. Isidore Minerd
  • Software optimization resources by Agner Fog
  • The Boost C++ libraries
  • The Rook's Guide to C++ (PDF)
  • The Ultimate Question of Programming, Refactoring, and Everything
  • Thinking in C++, Second Edition, Vol. 1. - Bruce Eckel (Vol. 2)
  • Chapel

  • Chapel Tutorial
  • Chapel Tutorial for Programmers
  • Cilk 5.4.6 Reference Manual (PDF)
  • Clojure

  • A Brief Beginner’s Guide To Clojure
  • Clojure - Functional Programming for the JVM - R. Mark Volkmann
  • Clojure by Example - Hirokuni Kim
  • Clojure Cheat Sheet
  • Clojure community-driven documentation
  • Clojure Cookbook
  • Clojure Distilled Beginner Guide
  • Clojure for the Brave and True
  • Clojure in Small Pieces - Rich Hickey (PDF)
  • Clojure Koans
  • Clojure Programming - Wikibooks
  • ClojureScript Koans
  • ClojureScript Unraveled (HTML)
  • Data Sorcery with Clojure
  • Modern cljs
  • SICP Distilled - An idiosyncratic tour of SICP in Clojure
  • The Clojure Style Guide
  • COBOL

  • COBOL Programming Fundamental (PDF)
  • Enterprise COBOL for z/OS documentation library
  • Introduction to the COBOL Language
  • OpenCOBOL 1.1 - Programmer's Guide (PDF)
  • CoffeeScript

  • CoffeeScript Cookbook
  • CoffeeScript Ristretto - Reginald Braithwaite (Leanpub account or valid email requested)
  • Smooth CoffeeScript
  • The Little Book on CoffeeScript
  • ColdFusion

  • CFML In 100 Minutes - J. Casimir
  • Learn CF in a Week
  • Component Pascal

  • Computing Fundamentals - Stan Warford (PDF)
  • CoolAid: The Cool 2013 Reference Manual (PDF)
  • Certified Programming with Dependent Types
  • Software Foundations
  • Crystal

  • Crystal for Rubyists
  • CUDA C Best Practices Guide (PDF)
  • CUDA C Programming Guide (PDF)
  • OpenCL Programming Guide for CUDA Architecture (PDF)
  • D Templates Tutorial
  • Programming in D
  • What is Dart?
  • Getting started with DB2 Express-C (PDF)
  • Getting started with IBM Data Studio for DB2 (PDF)
  • Getting started with IBM DB2 development (PDF)
  • Delphi / Pascal

  • Essential Pascal Version 1 and 2 - M. Cantù
  • DTrace

  • IllumOS Dynamic Tracing Guide
  • Elasticsearch

  • Elasticsearch: The Definitive Guide ( fork it on GH )
  • Exploring Elasticsearch
  • Eiffel

  • A Functional Pattern System for Object-Oriented Design - Thomas Kuhne (PDF)
  • Elixir

  • 30 Days of Elixir - Tim Morgan (HTML)
  • Elixir School (HTML)
  • Études for Elixir (HTML)
  • Getting Started Guide (HTML) (PDF, MOBI, EPUB)
  • Joy of Elixir - Ryan Bigg (HTML) - Source ( 🚧 in process )
  • Learning Elixir - Joseph Kain Blog (HTML)
  • The Ultimate Guide To Elixir For Object-Oriented Programmers - Bruce Park (HTML)
  • Ecto Getting Started Guide (HTML)
  • Phoenix

  • Phoenix v1.3.0 Guide (HTML)
  • Versioned APIs with Phoenix - Elvio Vicosa (PDF) (account required)
  • Emacs

  • An Introduction to Programming in Emacs Lisp, 3rd Edition
  • GNU Emacs Lisp Reference Manual
  • GNU Emacs Manual (PDF)
  • Embedded Systems

  • Control and Embedded Systems (HTML)
  • Discovering the STM32 Microcontroller (PDF)
  • Introduction to Microcontrollers (HTML)
  • Erlang

  • Concurrent Programming in ERLANG (PDF)
  • Erlang Handbook (PDF)
  • Erlang Programming - Wikibooks (HTML)
  • Études for Erlang - J. David Eisenberg
  • Getting Started with Erlang User's Guide (HTML)
  • Learn You Some Erlang For Great Good - Frederic Trottier-Hebert
  • Making reliable distributed systems in the presence of software errors - Joe Armstrong (PDF)
  • Stuff Goes Bad: Erlang in Anger - Fred Herbert (PDF)
  • ESP8266

  • Kolban's book on the ESP32 & ESP8266 (Leanpub account or valid email requested)
  • F Sharp

  • Analyzing and Visualizing Data with F# (PDF)
  • F# for fun and profit (ePub)
  • F# Programming - Wikibooks
  • F# Succinctly, SyncFusion (PDF, Kindle) (email address requested , not required)
  • Functional Programming Textbook - Yusuf M Motara (PDF)
  • Programming Language Concepts for Software Developers (PDF)
  • Firefox OS

  • Quick Guide For Firefox OS App Development: Creating HTML5 based apps for Firefox OS - Andre Garzia
  • Force.com

  • Developer Workbooks
  • Force.com Fundamentals
  • Force.com Platform Fundamentals: An Introduction to Custom Application Development in the Cloud
  • Heroku Postgres (PDF)
  • Forth

  • A Beginner's Guide to Forth
  • And so Forth... (PDF)
  • Programming Forth (PDF)
  • Starting Forth
  • Thinking Forth
  • Thoughtful Programming and Forth
  • Fortran

  • Introduction to fortran 95 and numerical computing: a jump-start for scientists and engineers (PDF)
  • Self Study Guide: Programming in Fortran 95 (PDF)
  • FreeBSD

  • Books and Articles from FreeBSD Site
  • The Complete FreeBSD
  • Using C on the UNIX System - David A. Curry
  • A Visual Git Reference - Mark Lodato
  • Conversational Git
  • git - the simple guide
  • Git for Computer Scientists
  • Git From The Bottom Up - J. Wiegley
  • Git Immersion
  • Git In The Trenches
  • Git internals - Scott Chacon (PDF)
  • Git Magic
  • Git Pocket Guide - Richard E. Silverman
  • Git Reference
  • Git Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Git Workflows
  • GitHub Cheat Sheet - Tim Green (Markdown)
  • Intoduction to Git and Github - Launch School
  • Intoduction to Git and Github - Tutorial - Dr. Chris Bourke (PDF)
  • Learn Enough Git to be Dangerous - Michael Hartl
  • Learn Git - Learn Version Control with Git - Tobias Günther
  • Pro Git - Scott Chacon
  • Pro Git Reedited - Jon Forrest
  • Ry's Git Tutorial - Ryan Hodson
  • Think Like (a) Git: A Guide for the Perplexed
  • An Introduction to Programming in Go
  • Build Web Application with Golang
  • Building Web Apps with Go
  • Effective Go
  • Go 101 - @TapirLiu
  • Go Bootcamp - Matt Aimonetti
  • Go by Example
  • Go for Javascript Developers
  • Learning Go
  • Let's learn Go!
  • Practical Cryptography With Go - Kyle Isom
  • The Go Tutorial
  • The Little Go Book
  • Web apps in Go, the anti textbook
  • Groovy

    Gradle

  • Building Java Projects with Gradle
  • Gradle User Guide - Hans Dockter, Adam Murdoch ( PDF )
  • Grails

  • Getting Started with Grails
  • Grails Tutorial for Beginners
  • The Grails Framework - Reference Documentation - Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari ( PDF )
  • Spock Framework

  • Spock Framework Reference Documentation - Peter Niederwieser
  • Hack Documentation
  • Hadoop

  • Cloudera Impala - John Russel
  • Data-Intensive Text Processing with MapReduce (Jimmy Lin and Chris Dyer) (PDF)
  • Hadoop Explained - Aravind Shenoy, Packt. (email address requested , not required)
  • Hadoop Illuminated - Mark Kerzner & Sujee Maniyam
  • Programming Pig - Alan Gates
  • Haskell

  • A Gentle Introduction to Haskell
  • Anatomy of Programming Languages - William R. Cook
  • Beautiful Code, Compelling Evidence (PDF)
  • Exploring Generic Haskell - Andres Löh (PDF)
  • Happy Learn Haskell Tutorial
  • Haskell - Wikibooks
  • Haskell and Yesod
  • Haskell no panic
  • Haskell web Programming (Yesod tutorial)
  • Learn Haskell Fast and Hard
  • Learn You a Haskell for Great Good - Miran Lipovaca
  • Parallel and Concurrent Programming in Haskell - Simon Marlow
  • Real World Haskell
  • Speeding Through Haskell
  • Wise Man's Haskell - Andre Popovitch
  • Yet Another Haskell Tutorial (PDF)
  • Flambe Handbook
  • Haxe and JavaScript - Matthijs Kamstra (wikibook)
  • Haxe Manual - Haxe Foundation (PDF, HTML)
  • HaxeFlixel Handbook (HTML)
  • Kha Handbook
  • HTML / CSS

  • A beginner's guide to HTML&CSS
  • A free guide to learn HTML and CSS
  • Adaptive Web Design - Aaron Gustafson
  • An advanced guide to HTML&CSS
  • Canvassing
  • Code Guide: Standards for developing flexible, durable, and sustainable HTML and CSS - Mark Otto
  • CSS Animation 101
  • Dive Into HTML5 - Mark Pilgrim ( PDF )
  • GA Dash
  • Google's HTML/CSS Style Guide
  • How to Code in HTML5 and CSS3
  • HTML Canvas Deep Dive - Josh Marinacci
  • HTML Dog Tutorials
  • HTML5 Canvas - Steve Fulton & Jeff Fulton
  • HTML5 for Publishers - Sanders Kleinfeld
  • HTML5 For Web Designers - Jeremy Keith
  • HTML5 Graphing and Data Visualization Cookbook - Ben Fhala, Packt. (email address requested , not required)
  • HTML5 Notes for Professionals - Compiled from StackOverflow documentation (3.x)
  • HTML5 Shoot 'em Up in an Afternoon - Bryan Bibat
  • Learn CSS Layout
  • Learn CSS Layout the pedantic way
  • Learn to Code HTML & CSS - Shay Howe
  • MaintainableCSS
  • Pro HTML5 Programming
  • Scalable and Modular Architecture for CSS - Jonathan Snook
  • Thinking in CSS - Aravind Shenoy, Packt. (email address requested , not required)
  • Thinking in HTML - Aravind Shenoy, Packt. (email address requested , not required)
  • Understanding Flexbox: Everything you need to know - Ohans Emmanuel
  • Web Audio API - Boris Smus
  • Bootstrap

  • Twitter Bootstrap 3 Succinctly (PDF, Kindle) (email address requested , not required)
  • Twitter Bootstrap Succinctly (PDF, Kindle) (email address requested , not required)
  • Introduction to HTTP - Launch School
  • The Implementation of the Icon Programming Language
  • Cocoa Dev Central
  • iOS 8 App Development Essentials
  • iOS Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Mastering iOS Game Development - Miguel DeQuadros, Packt (email address requested , not required)
  • NSHipster (Resource)
  • Start Developing iOS Apps (Swift) (HTML)
  • Start Developing iOS Apps Today (Objective-C) - Last updated 22.10.2013 (PDF)
  • IoT in five days- V1.1 (PDF, EPUB)
  • Isabelle/HOL

  • Concrete Semantics - A Proof Assistant Approach by Tobias Nipkow and Gerwin Klein (PDF)
  • Isabelle/HOL - A Proof Assistant for Higher-Order Logic by Tobias Nipkow and Lawrence C. Paulson and Markus Wenzel (PDF)
  • Arithmetic by Kenneth E Iverson (PDF)
  • Brief Reference by Chris Burke and Clifford Reiter (PDF)
  • Calculus by Kenneth E Iverson (PDF)
  • Computers and Mathematical Notation by Kenneth E Iverson
  • Concrete Math Companion by Kenneth E Iverson (PDF)
  • Easy J by Linda Alvord, Norman Thomson (PDF) ( Word DOC )
  • Exploring Math by Kenneth E Iverson (PDF)
  • J for C Programmers by Henry Rich
  • J Primer
  • Learning J by Roger Stokes- online
  • Math for the Layman by Kenneth E Iverson (zipped html+images)
  • 3D Programming in Java - Daniel Selman (PDF)
  • Apache Jakarta Commons: Reusable Java Components - Will Iverson (PDF)
  • Artificial Intelligence - Foundation of Computational Agents (2010) - David Poole and Alan Mackworth
  • Category wise tutorials - J2EE - Yong Mook Kim
  • Core Servlets and JavaServer Pages, 2nd Ed. (2003) - Marty Hall and Larry Brown
  • Data Structures in Java for the Principled Programmer (2007) - Duane A. Bailey (PDF)
  • Google's Java Style Guide
  • Introduction to Computer Science "booksite" - by Robert Sedgewick and Kevin Wayne (HTML)
  • Introduction to Computer science using Java - Bradley Kjell
  • Introduction to Programming in Java - Robert Sedgewick and Kevin Wayne
  • Introduction to Programming Using Java - David J. Eck
  • Java Application Development on Linux (2005) - Carl Albing and Michael Schwarz (PDF)
  • Java, Java, Java Object-Oriented Problem Solving - R. Morelli and R.Walde
  • Java Language and Virtual Machine Specifications - James Gosling, et al
  • Java Notes for Professionals - Compiled from StackOverflow documentation (3.x)
  • Java Programming for Kids - Yakov Fain
  • Java: The Legend - Ben Evans (email address requested , not required)
  • Learning Java (4th Edition) - Patrick Niemeyer and Daniel Leuck
  • Microservices Best Practices for Java (PDF)
  • Microservices for Java Developers - Christian Posta (email address requested , not required)
  • Modern Java EE Design Patterns - Markus Eisele (email address requested , not required)
  • Neural Network Development with Java - Alan M. F. Souza and Fabio M. Soares (email address requested , not required)
  • Object-Oriented Programming in JavaTM Textbook - Rick Halterman (PDF per Chapter)
  • Object Oriented Programming using Java - Simon Kendal (PDF) , Bookboon. (email address requested , not required)
  • Object-Oriented vs. Functional Programming - Richard Warburton (email address requested , not required)
  • OOP - Learn Object Oriented Thinking & Programming - Rudolf Pecinovsky (PDF)
  • Open Data Structures (in Java) - Pat Morin (PDF)
  • Processing XML with Java (A Guide to SAX, DOM, JDOM, JAXP, and TrAX) (2002) - Elliotte Rusty Harold
  • The ABC of PDF with iText: PDF Syntax essentials - Bruno Lowagie (Leanpub account or valid email requested)
  • The Java EE6 Tutorial (PDF)
  • The Java EE7 Tutorial - Eric Jendrock, et al (PDF)
  • The Java Tutorials
  • Think Java: How to Think Like a Computer Scientist - Allen B. Downey and Chris Mayfield
  • Welcome to Java for Python Programmers - Brad Miller
  • Welcome to the Java Workshop (2006) - Trevor Miller
  • Codename One

  • Codename One Developer Guide (PDF)
  • Create an Uber Clone in 7 Days (first 2 chapters) - Shai Almog (PDF)
  • JasperReports

  • The JasperReports Ultimate Guide, Third Edition (PDF)
  • Spring

  • Spring Framework Reference Documentation - Rod Johnson, Juergen Hoeller, Keith Donald, Colin Sampaleanu, Rob Harrop, Thomas Risberg, Alef Arendsen, Darren Davison, Dmitriy Kopylenko, Mark Pollack, Thierry Templier, Erwin Vervaet, Portia Tung, Ben Hale, Adrian Colyer, John Lewis, Costin Leau, Mark Fisher, Sam Brannen, Ramnivas Laddad, Arjen Poutsma, Chris Beams, Tareq Abedrabbo, Andy Clement, Dave Syer, Oliver Gierke, Rossen Stoyanchev, Phillip Webb, Rob Winch, Brian Clozel, Stephane Nicoll, Sebastien Deleuze ( PDF )
  • Spring Boot

  • Spring Boot Reference Guide - Phillip Webb, Dave Syer, Josh Long, Stéphane Nicoll, Rob Winch, Andy Wilkinson, Marcel Overdijk, Christian Dupuis ( PDF , EPUB )
  • Spring Security

  • Spring Security Reference - Ben Alex, Luke Taylor, Rob Winch
  • Wicket

  • Official Free Online Guide for Apache Wicket framework
  • JavaScript

  • Basic JavaScript for the impatient programmer - Dr. Axel Rauschmayer
  • Book of Modern Frontend Tooling
  • Crockford's JavaScript - Douglas Crockford
  • Dev Docs
  • Developing Backbone.js Applications - Addy Osmani
  • Directory of free Javascript ebooks
  • Eloquent JavaScript 2nd edition - Marijn Haverbeke
  • Exploring ES6 - Dr. Axel Rauschmayer
  • Google JavaScript Style Guide
  • Human JavaScript
  • JavaScript Allongé - Reginald Braithwaite
  • JavaScript Bible (PDF)
  • JavaScript Challenges Book
  • JavaScript Enlightenment - Cody Lindley
  • JavaScript ES6 and beyond - Alberto Montalesi (PDF, epub)
  • JavaScript For Cats
  • JavaScript Fundamentals, Plus a Dash Of JQuery - for dinner ladies
  • JavaScript Garden (Maintained by Tim Ruffles)
  • JavaScript Patterns Collection - Shi Chuan
  • JavaScript Spessore - Reginald Braithwaite
  • Javascript Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • JavaScript the Right Way
  • jQuery Fundamentals (starts with JavaScript basics)
  • JS Robots (PDF)
  • Leaflet Tips and Tricks: Interactive Maps Made Easy - Malcolm Maclean
  • Learn to Code JavaScript by Playing a Game
  • Learning JavaScript Design Patterns - Addy Osmani
  • Let's Learn ES6 - Ryan Christiani (Superbook format)
  • Managing Space and Time with JavaScript - Book 1: The Basics - Noel Rappin
  • Marionette Exposé: Learn to write modular Javascript applications using Backbone Marionette and RequireJS/AMD - Jack Killilea (Leanpub account or valid email requested)
  • Mastering JavaScript High Performance - Chad R. Adams, Packt. (email address requested , not required)
  • Mozilla Developer Network's JavaScript Guide
  • O'Reilly Programming JavaScript Applications
  • Object-Oriented JavaScript - Stoyan Stefanov, Kumar Chetan Sharma (email address requested , not required)
  • Oh My JS - Azat Mardanov
  • Patterns For Large-Scale JavaScript Application Architecture - Addy Osmani
  • Speaking JavaScript - Dr. Axel Rauschmayer
  • The JavaScript Tutorial
  • The JavaScript Way - Baptiste Pesquet
  • The Problem with Native JavaScript APIs
  • Thinking in JavaScript - Aravind Shenoy, Packt. (email address requested , not required)
  • Understanding ECMAScript 6 - Nicholas C. Zakas
  • Understanding JavaScript OOP (Sorella)
  • You Don't Know JS
  • Angular.js

  • Angular for the jQuery developer
  • Angular.js Guide
  • Angular.js Material Designing
  • Angular.js Tutorial
  • AngularJS - Step by Logical Step
  • AngularJS Essentials - Rodrigo Branas, Packt (email address requested , not required)
  • AngularJS Succinctly (PDF, Kindle) (email address requested , not required)
  • AngularJs vs EmberJs
  • AngularJS with Ruby on Rails
  • Developing with Angular - Denys Vuika (Leanpub account or valid email requested)
  • Recipes with Angular.js - Frederik Dietz
  • Seven-Part Introduction to Angular
  • Unit Testing Best Practices in AngularJS
  • Aurelia

  • Beginning Aurelia - behzad (Leanpub account or valid email requested)
  • Backbone.js

  • A Complete guide for learning Backbone.js
  • A pragmatic guide to Backbone.js apps
  • Backbone Tutorials: Beginner, Intermediate and Advanced - Thomas Davis (Leanpub account or valid email requested)
  • Backbone.js + Require.js, Modularization and Just in Time Dependency Loading, part 1 part 2
  • Backbone.js and socket.io
  • Backbonejs Tutorials
  • Building Single Page Web Apps with Backbone.js ( 🚧 in process )
  • Developing Backbone.js Applications
  • Getting Started with Backbone.js
  • How to share Backbone.js models with node.js
  • Booty5.js

  • The Booty5 HTML5 Game Maker Manual
  • D3.js

  • D3 Tips and Tricks - Malcolm Maclean
  • Dashing D3.js Tutorial
  • Interactive Data Visualization for the Web
  • Interactive Data Visualization with D3
  • Dojo: The Definitive Guide - Matthew A. Russell
  • An Introduction to Elm (HTML)
  • Beginning Elm - Pawan Poudel (HTML)
  • Building a Live-Validating Signup Form in Elm
  • Elm Accelerated - James Porter
  • Elm Programming Language (HTML)
  • Elm Tutorial
  • Learn You an Elm (HTML)
  • The Elm Architecture
  • Ember.js

  • AngularJs vs EmberJs
  • DockYard Ember.js Style Guide
  • Ember App with RailsApi
  • Ember.js - Getting started
  • Vic Ramon's Ember Tutorial
  • Express.js

  • Express.js Guide - Azat Mardanov
  • jQuery

  • JavaScript Fundamentals, Plus a Dash Of JQuery - for dinner ladies
  • jQuery Novice to Ninja (PDF)
  • jQuery Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Meteor

  • BulletProof Meteor
  • Your First Meteor Application, A Complete Beginner’s Guide to the Meteor JavaScript Framework
  • Node.js

  • An Introduction to libuv - Nikhil Marathe ( PDF - ePub )
  • Mixu's Node Book
  • Node Documentation
  • Node: Up and Running - Tom Hughes-Croucher
  • Node.js Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • The Node Beginner Book
  • What You Need To Know About Node.js - Bruno Joseph Dmello, Packt (email address requested , not required)
  • Om Tutorial
  • React

  • Free React on Rails course
  • Hacking with React
  • Intro to the React Framework
  • Learning React.js: Getting Started and Concepts
  • React-Bits ( vasanthk )
  • React Enlightenment
  • React In-depth: An exploration of UI development
  • React Primer Draft
  • React Tutorial
  • React Tutorial by Josh Finnie
  • Part 1
  • Part 2
  • Part 3
  • React with ASP.NET Core Tutorial
  • React.js Tutorial: Now is Your Time to Try It, Right in Your Browser
  • SurviveJS - Webpack and React
  • The Road to learn React - Build a Hacker News App along the Way - Robin Wieruch (Leanpub account or valid email requested) markdown
  • React Native

  • Programming React Native (Leanpub account or valid email requested)
  • React Native Animation Book
  • React Native Express
  • React Native Training
  • Redux

  • Full-Stack Redux Tutorial
  • SoundCloud Application in React + Redux
  • The Complete Redux Book - Boris Dinkevich and Ilya Gelman (Leanpub account or valid email requested)
  • Jenkins

  • Jenkins: The Definitive Guide (PDF)
  • Julia

  • Introducing Julia - Wikibooks
  • Julia by Example - Samuel Colvin (GitHub repo)
  • Julia language: a concise tutorial - Antonello Lobianco (GitBook)
  • Learn Julia in Y minutes - Leah Hanson
  • The Julia Express - Bogumił Kamiński (PDF)
  • Kotlin

  • Kotlin Notes for Professionals book - Compiled from StackOverflow documentation
  • Kotlin Official Documentation
  • LaTeX / TeX

    LaTeX

  • Arbitrary LaTex Reference
  • Begin Latex in minutes
  • LaTeX - Wikibooks
  • The Not So Short Introduction to LaTeX (PDF)
  • Notes On Programming in TeX - Christian Feursänger (PDF)
  • TeX by Topic, A TeXnician's Reference - Victor Eijkhout
  • TeX for the Impatient - Paul Abrahams, Kathryn Hargreaves, and Karl Berry
  • Limbo

  • Inferno Programming With Limbo
  • Linux

  • Ad Hoc Data Analysis From The Unix Command Line - Wikibooks
  • Advanced Linux Programming (PDF)
  • Automated Linux From Scratch
  • Getting Started with Ubuntu
  • GNU Autoconf, Automake and Libtool
  • GTK+/Gnome Application Development
  • Hardened Linux From Scratch
  • Kali Linux: Professional Penetration-Testing Distribution
  • Learn Enough Command Line to Be Dangerous - Michael Hartl
  • Learning Debian GNU/Linux
  • Linux 101 Hacks - Ramesh Natarajan (PDF)
  • Linux Administrator's Security Guide
  • Linux Advanced Routing & Traffic Control HOWTO
  • Linux Device Drivers, Third Edition - Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman
  • Linux from Scratch
  • Linux Inside
  • Linux Kernel in a Nutshell
  • Linux Newbie Administrator Guide
  • Linux Security for Beginners
  • Linux Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • OpenVZ Linux virtualization (PDF)
  • Red Hat Enterprise Linux 6 Essentials
  • Secure Programming HOWTO - Creating Secure Software - D. A. Wheeler (HTML, PDF)
  • Ten Steps to Linux Survival: Bash for Windows People - Jim Lehmer
  • The Debian Administrator's Handbook
  • The Linux Command Line (PDF)
  • The Linux Development Platform (PDF)
  • The Linux Kernel Module Programming Guide
  • The Linux System Administrator's Guide
  • Ubuntu Pocket Guide and Reference
  • Ubuntu Server Guide (PDF)
  • Understanding the Linux Virtual Memory Manager - Mel Gorman (HTML, PDF)
  • UNIX Systems Programming for SVR4 - David A. Curry
  • Upstart Intro, Cookbook and Best Practises
  • What Every Programmer Should Know About Memory (PDF)
  • Basic Lisp Techniques - David J. Cooper, Jr. (PDF)
  • Casting Spels in Lisp
  • Common Lisp: A Gentle Introduction to Symbolic Computation - David S. Touretzky (PDF, PS)
  • Common Lisp: An Interactive Approach - Stuart C. Shapiro
  • Common Lisp Quick Reference
  • Common Lisp the Language, 2nd Edition
  • Google's Common Lisp Style Guide
  • Interpreting LISP - Gary D. Knott (PDF)
  • Learn Lisp The Hard Way - Colin J.E. Lupton
  • Let Over Lambda - 50 Years of Lisp - D. Hoyte
  • Lisp Hackers: Interviews with 100x More Productive Programmers - Vsevolod Dyomkin
  • Lisp Koans
  • Lisp Web Tales - Pavel Penev (Leanpub account or valid email requested)
  • On Lisp - P. Graham
  • Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp - Peter Norvig (PDF, epub, markdown)
  • Practical Common Lisp - P. Seibel
  • SOLID Design Principles in Common Lisp - Momozor (PDF)
  • Successful Lisp: How to Understand and Use Common Lisp - David Lamkins (PDF)
  • The Common Lisp Cookbook
  • The Evolution of Lisp - Guy L. Steele Jr., Richard P. Gabriel (PDF)
  • Livecode

  • LiveCode userguide (PDF)
  • Lua 5.3 Reference Manual
  • Lua Programming - Wikibooks
  • Programming in Lua (first edition)
  • Managing Projects with GNU Make - Robert Mecklenburg
  • Markdown

  • Learn Markdown - Sammy P., Aaron O. (PDF) (EPUB) (MOBI)
  • Mathematica

  • Mathematica® programming: an advanced introduction by Leonid Shifrin
  • Stephen Wolfram's The Mathematica Book
  • Vector Math for 3d Computer Graphics
  • Wolfram Mathematica Tutorial Collection
  • MATLAB

  • An Interactive Introduction to MATLAB (PDF)
  • An Introduction to MATLAB (PDF)
  • Applications of MATLAB in Science and Engineering
  • Experiments with MATLAB
  • Freshman Engineering Problem Solving with MATLAB
  • Interactive Tutorials for MATLAB, Simulink, Signal Processing, Controls, and Computational Mathematics
  • MATLAB - A Fundamental Tool for Scientific Computing and Engineering Applications - Volume 1
  • MATLAB - A Ubiquitous Tool for the Practical Engineer
  • MATLAB for Engineers: Applications in Control, Electrical Engineering, IT and Robotics
  • MATLAB Programming - Wikibooks
  • MATLAB Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Numerical Computing with MATLAB
  • Physical Modeling in MATLAB - Alan B. Downey
  • Maven

  • Developing with Eclipse and Maven
  • Maven by Example
  • Maven: The Complete Reference
  • Repository Management with Nexus
  • Mercurial

  • HGInit - Mercurial Tutorial by Joel Spolsky
  • Mercurial: The Definitive Guide
  • Mercurial: The Definitive Guide 2nd edition ( source repository ) ( 🚧 in process )
  • Mercury

  • The Mercury Users' Guide (PDF)
  • Modelica

  • Modelica by Example
  • MySQL

  • MySQL Essentials
  • MySQL Tutorial Excerpt (PDF)
  • Neo4J

  • Graph Databases (PDF)
  • Graph Databases 2nd edition (account required)
  • .NET Framework

  • Entity Framework
  • Game Creation with XNA - Wikibooks
  • .NET for Visual FoxPro Developers
  • .NET Performance Testing and Optimization - The Complete Guide (RedGate, By Paul Glavich and Chris Farrell)
  • Under the Hood of .NET Memory Management (PDF) (RedGate, By Chris Farrell and Nick Harrison)
  • Visual Studio .NET Tips and Tricks (VS 2003-2005 only)
  • NoSQL

  • CouchDB: The Definitive Guide
  • Extracting Data from NoSQL Databases: A Step towards Interactive Visual Analysis of NoSQL Data - Petter Nasholm (PDF)
  • Graph Databases
  • Instant MongoDB - Amol Nayak, Packt. (email address requested , not required)
  • MongoDB Koans
  • MongoDB Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • NoSQL Databases - Christof Strauch (PDF)
  • The Little MongoDB Book
  • The Little Redis Book - K. Seguin (PDF, Epub)
  • Oberon

  • Algorithms and Data-Structures - Niklaus Wirth (PDF)
  • Object-Oriented Programming in Oberon-2 - Hanspeter Mössenböck (PDF)
  • Programming in Oberon - Niklaus Wirth (PDF)
  • Objective-C

  • Google's Objective-C Style Guide
  • Object-Oriented Programming with Objective-C
  • Objective-C Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Programming With Objective-C
  • Try Objective-C Book
  • OCaml

  • Developing Applications With Objective Caml
  • Real World OCaml
  • Think OCaml - Allen B. Downey and Nicholas Monje
  • Unix System Programming in OCaml Github Repo
  • Using, Understanding, and Unraveling The OCaml Language: From Practice to Theory and vice versa - Didier Rémy
  • Octave

  • Octave Programming - Wikibooks
  • OpenGL ES

  • iPhone 3D Programming - Developing Graphical Applications with OpenGL ES - Philip Rideout
  • OpenMP

  • A Guide To OpenMP
  • OpenMP Application Programming Interface Standard Version 4.0 (PDF)
  • OpenResty

  • Programming OpenResty
  • OpenSCAD

  • OpenSCAD User Manual - Wikibooks
  • TrueOS

  • TrueOS® Users Handbook
  • Beginning Perl
  • Data Munging with Perl (PDF)
  • Embedding Perl in HTML with Mason - D. Rolsky, K. Williams
  • Essential Perl (PDF)
  • Exploring Programming Language Architecture in Perl
  • Extreme Perl - R. Nagier (HTML, PDF)
  • Higher-Order Perl - M. J. Dominus (PDF)
  • Impatient Perl
  • Learning Perl The Hard Way
  • Mastering Perl - brian d foy
  • Modern Perl 5
  • Perl & LWP
  • Perl 5 Internals
  • Perl for the Web - C. Radcliff
  • Perl Training Australia - Course Notes
  • Plack Handbook
  • SDL::Manual Writing Games in Perl
  • Template Toolkit Documentation
  • The DBIx-Class Book
  • The PDL Book (PDF)
  • Web Client Programming with Perl
  • Perl 6 / Raku

  • Perl 6 at a Glance - Andrew Shitov (HTML) (PDF)
  • Perl 6 Introduction
  • Perl 6 Programming - Wikibooks
  • Think Perl 6 - Laurent Rosenfeld, with Allen B. Downey (PDF)
  • Using Perl 6 ( 🚧 project is dead )
  • CakePHP Framework
  • CakePHP Cookbook 2.x (PDF)
  • CodeIgniter Framework
  • CodeIgniter 2.2.6
  • CodeIgniter 3.1.6
  • Drupal Framework
  • Drupal 7
  • The Tiny Book of Rules (PDF)
  • Laravel 5
  • Laravel 5.x Official Documentation. Synced Daily (Leanpub account or valid email requested)
  • Laravel Best Practices
  • Laravel: Code Smart - Dayle Rees
  • Laravel Collections Unraveled - Jeffrey Madsen (Leanpub account or valid email requested)
  • The Symfony Best practices 3.4.x (PDF)
  • The Symfony Book 3.4.x
  • The Symfony Getting started 3.4.x (PDF)
  • Symfony 4.1
  • The Symfony Best practices 4.1.x (PDF)
  • The Symfony Book 4.1.x
  • The Symfony Getting started 4.1.x (PDF)
  • Postgres Official Documentation
  • Postgres Succinctly (PDF, Kindle) (email address requested , not required)
  • Practical PostgreSQL
  • The Internals of PostgreSQL for database administrators and system developers
  • PowerShell

  • Creating HTML Reports in PowerShell (PDF,ePub,HTML)
  • DevOps: The Ops Perspective (PDF, ePub, MOBI)
  • Ditch Excel: Making Historical & Trend Reports in PowerShell (PDF, ePub, MOBI)
  • Introduction to PowerShell for Unix People (PDF, ePub, HTML)
  • Layman’s Guide to PowerShell 2.0 remoting (PDF)
  • Mastering PowerShell v2
  • PowerShell 2.0 – One CMDLET At A Time (PDF)
  • PowerShell Notes for Professionals - Compiled from StackOverflow documentation (3.x)
  • PowerShell Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • Secrets of PowerShell Remoting (PDF, ePub, MOBI)
  • The Big Book of PowerShell Error Handling (PDF, ePub, MOBI)
  • The Big Book of PowerShell Gotchas (PDF, ePub, MOBI)
  • The DSC Book (PDF, ePub, HTML)
  • The Monad Manifesto - Annotated (PDF, ePub, MOBI)
  • Why PowerShell? (PDF, ePub, MOBI)
  • Windows PowerShell Networking Guide (PDF, ePub, MOBI)
  • Processing

  • The Nature of Code: Simulating Natural Systems with Processing
  • Prolog

  • Adventure in Prolog
  • Applications of Prolog - Attila Csenki, Bookboon. (email address requested , not required)
  • Coding Guidelines for Prolog - Michael A. Covington, Roberto Bagnara, Richard A. O'Keefe, Jan Wielemaker, Simon Price
  • Concise Intro to Prolog
  • Expert Systems in Prolog
  • GNU Prolog Manual (PDF)
  • Introduction to Prolog for Mathematicians - J. Ireson-Ireson-Paine
  • Learn Prolog Now!
  • Logic, Programming and Prolog (2ed)
  • Natural Language Processing Techniques in Prolog - P. Blackburn, K. Striegnitz
  • Prolog and Natural - Language Analysis - Fernando C. N. Pereira, Stuart M. Shieber
  • Prolog for Programmers
  • Prolog Problems - Werner Hett
  • Prolog Techniques - Attila Csenki, Bookboon. (email address requested , not required)
  • Prolog Tutorial
  • The Art of Prolog, Second Edition - Leon S. Sterling, Ehud Y. Shapiro (Open Access)
  • The First 10 Prolog Programming Contests - Bart Demoen, Phuong-Lan Nguyen, Tom Schrijvers, Remko Tronçon
  • Warren's Abstract Machine: A Tutorial Reconstruction - Hassan A¨it-Kaci
  • Constraint Logic Programming (extended Prolog)

  • A Gentle Guide to Constraint Logic Programming via ECLiPSe
  • PureScript

  • PureScript By Example - Phil Freeman
  • Python

  • 20 Python Libraries You Aren't Using (But Should) (email address requested , not required)
  • A Beginner's Python Tutorial - Wikibooks
  • A Byte of Python (3.x) (HTML, PDF, EPUB, Mobi)
  • A Guide to Python's Magic Methods - Rafe Kettler
  • A Whirlwind Tour of Python - Jake VanderPlas (PDF) (EPUB, MOBI)
  • Automate the Boring Stuff - Al Sweigart
  • Biopython (PDF)
  • Build applications in Python the antitextbook (3.x) (HTML, PDF, EPUB, Mobi)
  • Building Machine Learning Systems with Python - Willi Richert & Luis Pedro Coelho, Packt. (email address requested , not required)
  • Building Skills in Object-Oriented Design (Python) (PDF) (2.1.1)
  • Building Skills in Python (PDF) (2.6)
  • Code Like a Pythonista: Idiomatic Python
  • CodeCademy Python
  • Composing Programs (3.x)
  • Data Structures and Algorithms in Python - B. R. Preiss (PDF)
  • Dive into Python 3 - Mark Pilgrim (3.0)
  • Dive into Python - Mark Pilgrim (2.3)
  • From Python to NumPy
  • Full Stack Python
  • Functional Programming in Python (email address requested , not required)
  • Fundamentals of Python Programming - Richard L. Halterman (PDF) (3.2)
  • Google's Python Class (2.4 - 2.x)
  • Google's Python Style Guide
  • Hacking Secret Cyphers with Python - Al Sweigart (3.3)
  • Hadoop with Python (email address requested , not required)
  • Hitchhiker's Guide to Python! (2.6)
  • How to Make Mistakes in Python - Mike Pirnat (PDF) (1st edition)
  • How to Think Like a Computer Scientist: Learning with Python, Interactive Edition (3.2)
  • How to Think Like a Computer Scientist: Learning with Python - Allen B. Downey, Jeff Elkner and Chris Meyers (2.4)
  • Think Python - Allen B. Downey (2.x & 3.0)
  • Intermediate Python - Muhammad Yasoob Ullah Khalid (1st edition)
  • Introduction to Programming with Python (3.3)
  • Introduction to Programming Using Python - Cody Jackson (1st edition) (2.3)
  • Introduction to Python - Kracekumar (2.7.3)
  • Invent Your Own Computer Games With Python - Al Sweigart (3.1)
  • Learn Python, Break Python
  • Learn Python in Y minutes
  • Learn to Program Using Python - Cody Jackson (PDF)
  • Learning Python - Fabrizio Romano, Packt. (email address requested , not required)
  • Learning to Program
  • Lectures on scientific computing with python - J.R. Johansson (2.7)
  • Making Games with Python & Pygame - Al Sweigart (2.7)
  • Math for programmers (using python)
  • Modeling Creativity: Case Studies in Python - Tom D. De Smedt (PDF)
  • Natural Language Processing with Python (3.x)
  • Non-Programmer's Tutorial for Python 3 - Wikibooks (3.3)
  • Non-Programmer's Tutorial for Python 2.6 - Wikibooks (2.6)
  • Picking a Python Version: A Manifesto (email address requested , not required)
  • Porting to Python 3: An In-Depth Guide (2.6 - 2.x & 3.1 - 3.x)
  • Practical Programming in Python - Jeffrey Elkner (PDF)
  • Problem Solving with Algorithms and Data Structures using Python - Bradley N. Miller and David L. Ranum
  • Program Arcade Games With Python And Pygame (3.3)
  • Programming Computer Vision with Python (PDF)
  • Python 2 Official Documentation (PDF, HTML, TEXT) (2.x)
  • Python 2.7 quick reference - New Mexico Tech (2.7)
  • Python 3 Official Documentation (PDF, EPUB, HTML, TEXT) (3.x)
  • Python 3 Tutorial
  • Python Data Science Handbook - Jake VanderPlas (HTML, Jupyter Notebooks)
  • Python for Everybody Exploring Data Using Python 3 - Charles Severance (PDF, EPUB, HTML)
  • Python for Informatics: Exploring Information (2.7.5)
  • Python for you and me (2.7.3)
  • Python for you and me (3.x)
  • Python Idioms (PDF)
  • Python in Education (email address requested , not required)
  • Python in Hydrology - Sat Kumar Tomer
  • Python Koans (2.7 or 3.x)
  • Python Module of the Week (3.x)
  • Python Module of the Week (2.x)
  • Python Notes for Professionals - Compiled from StackOverflow documentation (3.x)
  • Python Practice Book (2.7.1)
  • Python Practice Projects
  • Python Programming - Wikibooks (2.7)
  • Python Programming - Wikibooks (PDF) (2.6)
  • Scipy Lecture Notes
  • SICP in Python (3.2)
  • Suporting Python 3: An In-Depth Guide (2.6 - 2.x & 3.1 - 3.x)
  • Test-Driven Web Development with Python - Harry Percival (3.3 - 3.x)
  • Text Processing in Python - David Mertz (2.3 - 2.x)
  • The Coder's Apprentice: Learning Programming with Python 3 - Pieter Spronck (PDF) (3.x)
  • The Definitive Guide to Jython, Python for the Java Platform - Josh Juneau, Jim Baker, Victor Ng, Leo Soto, Frank Wierzbicki (2.5)
  • The Little Book of Python Anti-Patterns ( Source )
  • The Programming Historian - William J. Turkel, Adam Crymble and Alan MacEachern
  • The Python Ecosystem: An Introduction
  • The Python GTK+ 3 Tutorial
  • The Standard Python Library - Fredrik Lundh
  • Think Complexity - Allen B. Downey (2nd Edition) (PDF, HTML)
  • Tiny Python 3.6 Notebook - Matt Harrison (3.6)
  • Web2py: Complete Reference Manual, 6th Edition (pre-release) (2.5 - 2.x)
  • Django

  • Django Girls Tutorial (1.11)
  • Django Official Documentation (PDF) (1.5)
  • Django Official Documentation (PDF) (1.7)
  • Django Official Documentation (PDF) (1.9)
  • Django Official Documentation (PDF) (1.10)
  • Django Official Documentation (PDF) (2.2)
  • Djen of Django
  • Effective Django (1.5)
  • How to Tango With Django (1.7)
  • Flask

  • Explore Flask - Robert Picard
  • The Flask Mega-Tutorial - Miguel Grinberg (0.9)
  • Kivy Programming Guide
  • Pandas

  • Learn Pandas - Hernan Rojas (0.18.1)
  • Pyramid

  • Quick Tutorial for Pyramid
  • Tornado

  • Learn Web Programming
  • Qt5 Cadaques - Juergen Bocklage-Ryannel and Johan Thelin (HTML, PDF, ePub) ( 🚧 in process )
  • Advanced R Programming - Hadley Wickham
  • An Introduction to Statistical Learning with Applications in R - Gareth James, Daniela Witten, Trevor Hastie and Robert Tibshirani (PDF)
  • Cookbook for R - Winston Chang
  • Introduction to Probability and Statistics Using R - G. Jay Kerns (PDF)
  • Learning Statistics with R - Daniel Navarro
  • Machine Learning with R - Brett Lantz, Packt. (email address requested , not required)
  • ModernDive - Chester Ismay and Albert Y. Kim
  • Practical Regression and Anova using R - Julian J. Faraway (PDF)
  • R for Data Science - Garrett Grolemund and Hadley Wickham
  • R for Spatial Analysis (PDF)
  • R Language for Programmers - John D. Cook
  • R Packages - Hadley Wickham
  • R Practicals (PDF)
  • R Programming - Wikibooks
  • R Programming for Data Science - Roger D. Peng (Leanpub account or valid email requested)
  • R Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • The caret Package - Max Kuhn
  • The R Inferno - Patrick Burns (PDF)
  • The R Language
  • The R Manuals
  • Tidy Text Mining with R - Julia Silge and David Robinson
  • Racket

  • How to Design Programs 2e
  • Programming Languages: Application and Interpretation
  • The Racket Guide
  • Raspberry Pi

  • Raspberry Pi Cookbook for Python Programmers - Tim Cox, Packt. (PDF) (email address requested , not required)
  • Raspberry Pi: Measure, Record, Explore - Malcolm Maclean (HTML)
  • Raspberry Pi Users Guide - (2012) - Eben Upton (PDF)
  • The Official Raspberry Pi Project Book (PDF)
  • REBOL

  • Learn REBOL - Nick Antonaccio
  • A community-driven Ruby style guide
  • CodeCademy Ruby
  • Developing Games With Ruby - Tomas Varaneckas
  • I Love Ruby
  • Introduction to Programming with Ruby - Launch School
  • Just Enough Ruby to Get By
  • Learn Ruby First - Frederick John
  • Learn Ruby the Hard Way - Zed Shaw
  • Learn to Program - Chris Pine
  • Mr. Neighborly's Humble Little Ruby Book
  • Object Oriented Programming with Ruby - Launch School
  • Practicing Ruby
  • Programming Ruby
  • Ruby Essentials
  • Ruby Hacking Guide
  • Ruby in Twenty Minutes
  • Ruby Koans
  • Ruby Learning
  • Ruby Programming
  • Ruby User's Guide
  • Ruby Web Dev: The Other Way - Yevhen Kuzminov
  • Rubyfu
  • The Bastards Book of Ruby
  • The Definitive Ruby Tutorial For Complete Beginners - Jesus Castello
  • The Unofficial Ruby Usage Guide (at Google) - Ian Macdonald
  • Why's (Poignant) Guide to Ruby
  • RSpec

  • Better Specs (RSpec Guidelines with Ruby)
  • Ruby on Rails

  • A community-driven Rails style guide
  • Building REST APIs with Rails
  • Kestrels, Quirky Birds, and Hopeless Egocentricity - Reg Braithwaite
  • Learn Ruby on Rails as You Modify a Craigslist Clone
  • Objects on Rails
  • Rails Girls Guides
  • Ruby on Rails 3.2 - Step by Step
  • Ruby on Rails 4.0 Guide
  • Ruby on Rails Guides
  • Ruby on Rails Tutorial (Rails 5): Learn Web Development with Rails - Michael Hartl
  • Upgrading to Rails 4
  • Sinatra

  • Sinatra Book
  • Rust by Example
  • Rust for Rubyists
  • The Rust Programming Language
  • The Rustonomicon
  • Why Rust? (PDF)
  • Sage for Power Users - William Stein (PDF)
  • The Sage Manuals
  • Scala

  • A Scala Tutorial for Java programmers (PDF)
  • Advanced Scala with Cats - Noel Welsh and Dave Gurnell (PDF, HTML, EPUB) (email address requested , not required)
  • Another tour of Scala
  • Creative Scala - Noel Welsh and Dave Gurnell (PDF, HTML, EPUB) (email address requested , not required)
  • EAI Patterns with Actor Model - Vaughn Vernon
  • Effective Scala
  • Essential Scala - Noel Welsh and Dave Gurnell (PDF, HTML, EPUB) (email address requested , not required)
  • Functional Programming for Mortals - Sam Halliday
  • Functional Programming, Simplified (Scala edition) - Alvin Alexander (free preview (400 pages from 595), PDF)
  • Hello, Scala - Alvin Alexander (free preview (120 pages from 257), PDF)
  • Learning Scala in small bites
  • Learning Scalaz
  • Pro Scala: Monadic Design Patterns for the Web
  • Programming in Scala, First Edition - by M. Odersky, L. Spoon, B. Venners
  • PythonToScala - Rob Story
  • S-99: Ninety-Nine Scala Problems - Phil! Gold
  • Scala & Design Patterns: Exploring Language Expressivity - Fredrik Skeel Løkke (PDF)
  • Scala By Example - M. Odersky (PDF)
  • Scala Cookbook: Bonus Chapters - Alvin Alexander (PDF)
  • Scala for Perl 5 Programmers - Breno G. de Oliveira
  • Scala for the Impatient (A1 Scala Level chapters) - Cay S. Horstmann
  • Scala School by Twitter
  • Scala Tutorial (PDF)
  • tetrix in Scala
  • The Neophyte's Guide to Scala - Daniel Westheide
  • The Type Astronaut's Guide to Shapeless - Dave Gurnell (PDF, HTML, EPUB) (email address requested , not required)
  • Xtrace
  • Exploring Lift (published earlier as "The Definitive Guide to Lift", PDF )
  • Lift Cookbook - Richard Dallaway
  • Simply Lift - David Pollak (PDF)
  • Play Scala

  • Essential Play - Dave Gurnell (PDF, HTML, EPUB) (email address requested , not required)
  • Play Framework Recipes - Alvin Alexander
  • Scheme

  • A Pamphlet Against R. Computational Intelligence in Guile Scheme
  • An Introduction to Scheme and its Implementation
  • Concrete Abstractions: An Introduction to Computer Science Using Scheme - M. Hailperin, B. Kaiser, K. Knight
  • How to Design Programs
  • Scheme Tutorial
  • Simply Scheme: Introducing Computer Science - B. Harvey, M. Wright
  • Teach Yourself Scheme in Fixnum Days
  • The Scheme Programming Language: Edition 3 - The Scheme Programming Language: Edition 4
  • Write Yourself a Scheme in 48 Hours - Wikibooks
  • Scilab

  • Introduction to Scilab
  • Programming in Scilab
  • Writing Scilab Extensions
  • Scratch

  • An Introductory Computing Curriculum Using Scratch
  • Computer Science Concepts in Scratch
  • Sed - An Introduction and Tutorial
  • The Self Handbook
  • Smalltalk

  • Deep into Pharo
  • Dynamic Web Development with Seaside - S. Ducasse, L. Renggli, C. D. Shaffer, R. Zaccone
  • Enterprise Pharo: a Web Perspective
  • Numerical Methods with Pharo
  • Pharo by Example (Smalltalk Implementation and IDE)
  • Squeak By Example (Smalltalk Implementation and IDE)
  • Stef's Free Online Smalltalk Books (meta-list)
  • Spark

  • Databricks Spark Knowledge Base
  • Databricks Spark Reference Applications
  • Mastering Apache Spark
  • SQL (implementation agnostic)

  • Developing Time-Oriented Database Applications in SQL
  • SQL For Web Nerds
  • SQL Notes for Professionals
  • Use The Index, Luke!: A Guide To SQL Database Performance
  • SQL Server

  • Best of SQLServerCentral.com Vol 7 *(RedGate, By SQLServerCentral Authors)
  • Brad's Sure Guide to SQL Server Maintenance Plans (RedGate, By Brad McGehee)
  • Defensive Database Programming (PDF) (RedGate, By Alex Kuznetsov)
  • How to Become an Exceptional DBA (RedGate, By Brad McGehee)
  • Inside the SQL Server Query Optimizer (RedGate, By Benjamin Nevarez)
  • Introducing Microsoft SQL Server 2008 R2
  • Introducing Microsoft SQL Server 2012
  • Introducing Microsoft SQL Server 2014
  • Mastering SQL Server Profiler (RedGate, By Brad McGehee)
  • Microsoft SQL Server Notes for Professionals (Compiled from StackOverflow documentation)
  • Performance Tuning with SQL Server Dynamic Management Views (RedGate, By Tim Ford and Louis Davidson)
  • Protecting SQL Server Data (RedGate, By John Magnabosco)
  • SQL Server 2012 Tutorials: Reporting Services
  • SQL Server Backup and Restore (RedGate, By Shawn McGehee)
  • SQL Server Concurrency: Locking, Blocking and Row Versioning (RedGate, By Kalen Delaney)
  • SQL Server Execution Plans (PDF) (RedGate, By Grant Fritchey)
  • SQL Server Execution Plans, Second Edition (PDF) (RedGate, By Grant Fritchey)
  • SQL Server Hardware (RedGate, By Glenn Berry)
  • SQL Server Internals: In-Memory OLTP (RedGate, By Kalen Delaney)
  • SQL Server Statistics (RedGate, By Holger Schmeling)
  • SQL Server Stumpers Vol.5 (RedGate, By SQLServerCentral Authors)
  • SQL Server Tacklebox (RedGate, By Rodney Landrum)
  • SQL Server Transaction Log Management (RedGate, By Tony Davis and Gail Shaw)
  • The Art of SQL Server FILESTREAM (RedGate, By Jacob Sebastian and Sven Aelterman)
  • Troubleshooting SQL Server: A Guide for the Accidental DBA (RedGate, By Jonathan Kehayias and Ted Krueger)
  • Standard ML

  • Introduction to Standard ML - Atsushi Ohori (PDF)
  • Programming in Standard ML '97 - Stephen Gilmore, University of Edinburgh
  • Programming in Standard ML, DRAFT - Robert Harper (PDF)
  • SML# Document - Atsushi Ohori, Katsuhiro Ueno
  • The Definition of Standard ML (Revised) - SMLFamily GitHub project (PDF)
  • Subversion

  • Subversion Version Control (PDF)
  • Version Control with Subversion
  • Swift

  • Hacking with Swift
  • Learn Swift
  • Swift Essentials - Second Edition - Dr. Alex Blewitt, Packt (email address requested , not required)
  • Swift Pocket Reference (email address requested , not required)
  • Test-driven iOS Development with Swift - Dr. Dominik Hauser, Packt. (email address requested , not required)
  • The Swift Programming Language (HTML) (iBook)
  • Using Swift with Cocoa and Objective-C (HTML) (iBook)
  • Vapor

  • Vapor 3 Tutorial For Beginners - Tibor Bödecs
  • Vapor Official Docs
  • Tcl Programming - Richard.Suchenwirth, et. al.
  • TclWise - Salvatore Sanfilippo
  • Teradata

  • Teradata Books
  • Tizen

  • Tizen for Dummies - Jon Lansdell, Cheng Luo, Michelle Somersville (PDF)
  • Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineers - Leslie Lamport (Postscript or PDF)
  • TypeScript

  • TypeScript Accelerated - James Porter
  • TypeScript Deep Dive
  • TypeScript for C# Programmers
  • TypeScript Succinctly, Syncfusion (PDF, Kindle) (email address requested , not required)
  • An Introduction to Unix
  • Commentary on the Sixth Edition UNIX Operating System - J. Lions
  • Unix as IDE - Tom Ryder (epub, mobi)
  • UNIX Commands and Concepts - Robert I. Pitts
  • Unix for Poets - Kenneth Ward Church (PDF)
  • Unix Toolbox - Colin Barschel
  • UNIX Tutorial for Beginners
  • Verilog

  • Verilog Quick Reference Guide - Sutherland HDL (PDF)
  • Verilog Tutorial
  • Free Range VHDL - Bryan Mealy, Fabrizio Tappero (TeX and PDF)
  • VHDL Tutorial
  • VHDL Tutorial: Learn By Example
  • A Byte of Vim
  • Learn Vim Progressively
  • Learn Vimscript the Hard Way
  • Use Vim Like A Pro - Tim Ottinger (Leanpub account or valid email requested)
  • Vi Improved -- Vim - Steve Oualline (PDF)
  • Vim Recipes (PDF)
  • Vim Regular Expressions 101
  • Visual Basic

  • Visual Basic Essentials
  • Visual Prolog

  • A Beginners' Guide to Visual Prolog
  • Visual Prolog for Tyros
  • Web Services

  • RESTful Web Services (PDF)
  • Windows 8

  • Programming Windows 8 Apps with HTML, CSS, and JavaScript (v1)
  • Programming Windows 8 Apps with HTML, CSS, and JavaScript (v2, incomplete)
  • Windows Phone

  • Developing An Advanced Windows Phone 7.5 App That Connects To The Cloud
  • Windows Phone 8 Development Succinctly - Matteo Pagani (PDF)
  • Windows Phone 8.1 Development for Absolute Beginners
  • Windows Phone Programming Blue Book
  • Workflow

  • Declare Peace on Virtual Machines. A guide to simplifying vm-based development on a Mac
  • xBase (dBase / Clipper / Harbour)

  • Application Development with Harbour - Wikibooks
  • CA-Clipper 5.2 Norton Guide
  • Clipper Tutorial: a Guide to Open Source Clipper(s) - Wikibooks
  •