📘 A curated list of awesome open source or open source licensed documents, guides, books.
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Awesome Open Source Documents

This is not a list of free programming books. This is a curated list of open source or open source licensed documents, guides, books which can read, use, modify, translate, redistribute and even rewrite under their license.

Document Template

[TITLE][repository-url] by AUTHOR ([SITE][site-url], LICENSE) - SHORT DESCRIPTION

Table of Contents


Computer Science

  • Crypto 101 (Site, cc-nc) - the introductory book on cryptography
  • The little book about OS development (Site, cc-nc-sa) - This is the source code for the book "The little book about OS development"
  • How to Design Programs (Site, cc-nc-nd)
  • Structure and Interpretation of Computer Programs (Site, cc-sa)
  • Programming Languages: Application and Interpretation (Site, cc-nc-sa)
  • Practical Foundations for Programming Languages (Site, cc-nc-nd)
  • Open Data Structures (Site, cc) - To provide a high-quality open content data structures textbook that is both mathematically rigorous and provides complete implementation
  • Algorithms, Etc. (Site, cc-nc-sa) - This page contains lecture notes and other course materials for various algorithms classes Jeff Erickson have taught at the University of Illinois, Urbana-Champaign.
  • Introduction to Theory of Computation (Site, cc-sa) - This is a free textbook for an undergraduate course on the Theory of Computation, which we have been teaching at Carleton University since 2002
  • Discrete Structures for Computer Science: Counting, Recursion, and Probability (Site, cc-nc-sa) - This is a free textbook for an undergraduate course on Discrete Structures for Computer Science, which I have been teaching at Carleton University since 2013
  • graphbook (GNU-FDL) - A GNU-FDL book on algorithmic graph theory by David Joyner, Minh Van Nguyen, and David Phillips. This is an introductory book on algorithmic graph theory
  • Operating Systems and Middleware: Supporting Controlled Interaction (Site cc-sa) - free, modifiable textbook on operating systems principles
  • Programming on Parallel Machines (Site, cc-nd) - The purpose of this book is to help you program shared-memory parallel machines without risking your sanity
  • Is Parallel Programming Hard, And, If So, What Can You Do About It? (Site, cc-sa) - The purpose of this book is to teach new programmers and scientists about the basics of High Performance Computing
  • High Performance Computing (Site, cc)
  • Natural Language Processing for the Working Programmer (Site, cc) - We will go into many of the techniques that so-called computational linguists use to analyze the structure of human language, and transform it into a form that computers work with
  • Fundamentals of Programming: With Object Oriented Programming (Site, cc-nc-sa) - This book presents a balanced and flexible approach to the incorporation of object-oriented principles in introductory courses using Python
  • Introduction to Computing (Site, cc-nc-sa) - This book introduces the most important ideas in computing using the Scheme and Python programming languages. It focuses on how to describe information processes by defining procedures, how to analyze the costs required to carry out a procedure, and the fundamental limits of what can and cannot be computed mechanically
  • Computer Science from the Bottom Up (Site, cc-sa) - Computer Science from the Bottom Up — A free, online book designed to teach computer science from the bottom end up. Topics covered include binary and binary logic, operating systems internals, toolchain fundamentals and system library fundamentals
  • Problem Solving with Algorithms and Data Structures (Site, cc-nc-sa) - Examples and work from Problem Solving with Algorithms and Data Structures Using Python
  • Data Compression Explained (Site, custom liscense) - This book is for the reader who wants to understand how data compression works, or who wants to write data compression software.

Data Science and Statistics

  • LearnDataScience (BSD) - Open Content for self-directed learning in data science
  • Think Stats (Site, cc-sa) - Probability and Statistics for Programmers
  • A Brief Introduction to Neural Networks (Site, cc-nc-nd)
  • Data Mining for the Masses (PDF, cc)
  • Bayesian Methods for Hackers (Site, MIT) - An intro to Bayesian methods and probabilistic programming from a computation/understanding-first, mathematics-second point of view
  • Journal of Statistical Software (Site, cc-by)
  • The Book Of Jupyter (Site, cc) - This is some of the material that covers the advanced Jupyter/IPython SciPy tutorial that is/was/will be given in July 2015


Mathematics & Physics

Open Source


  • 500 Lines or Less (cc & mit) - This is the source for the book 500 Lines or Less, the fourth in the Architecture of Open Source Applications series.
  • Guides (cc) - Guides for getting things done, programming well, and programming in style.
  • An App Launch Guide (Site, Public Domain) - This guide goes through all of the necessary steps for validating, building, marketing, and launching your product, specifically focused on app dev.
  • Reverse Engineering for Beginners (Site, cc-nc-nd) - Topics discussed: x86/x64, ARM/ARM64, MIPS, Java/JVM.
  • Build Podcast (Site, Public Domain) - Build Podcast is a show about technology tools for design and development all in the fun spirit of hacking, creating and building stuff!
  • Mozilla Developer Network (Site, cc-by-sa) - Shared knowledge for the Open Web
  • The Little Introduction To Programming (Site, cc-nc) - This book will teach you the fundamentals of programming and act as a foundation for whatever your programming goals may be.
  • The Programming Historian (Site, cc) - The Programming Historian is an online, open-access, peer-reviewed suite of tutorials that help humanists learn a wide range of digital tools, techniques, and workflows to facilitate their research.
  • WHAT IS CODE? (Site, cc-nc-nd) - Paul Ford’s “What Is Code?”


World Wide Web

  • HTTP API Design Guide (cc) - HTTP API design guide extracted from work on the Heroku Platform API
  • Dive Into HTML5 (Site, cc) - Dive Into HTML5 elaborates on a hand-picked selection of features from the HTML5 specification and other fine standards
  • Web Fundamentals (Site, Apache 2.0) - Best practices for modern web development
  • Code Guide (Site, MIT) - Standards for flexible, durable, and sustainable HTML and CSS
  • HTML Best Practices (cc0) - For writing maintainable and scalable HTML documents
  • WebComponents.org (Site, cc-sa) - A place to discuss and evolve Web Component best-practices
  • How to lose weight (in the browser) (Site, cc-sa, MIT) - The definitive front-end performance guide
  • North (Site, MIT) - MIT Design and development standards to align and guide your project.
  • RESTful Web APIs (Site, cc-nc-nd) - Restful Web APIs was the first book-length treatment of RESTful design, and the predecessor to RESTful Web APIs.
  • DOM Enlightenment (Site, cc-nc-nd) - Exploring the relationship between JavaScript and the modern HTML DOM
  • http2 explained (Site, cc-nc-nd) - http2 explained is a detailed document explaining and documenting HTTP/2, the successor to the widely popular HTTP/1.1 protocol

Writings and Documentation

  • Write the Doc (Site, cc) - A place for Sphinx documentation and general writing of things.
  • The Hitchhiker's Guide to Documentation! (Site, cc-nc-sa) - This Guide exists to provide advices and a best-practice handbook about creating documentation
  • CommonMark Spec (Site, cc-sa) - CommonMark is a rationalized version of Markdown syntax, with a spec and BSD-licensed reference implementations in C and JavaScript.
  • reStructuredText Markup Specification (Site, Public Domain)
  • Prose for Programmers (cc-nc-nd) - A book to help software developers write better prose

Journalism and Visualization

  • Data Journalism Handbook (cc-sa) - The Data Journalism Handbook is a free, open source reference book for anyone interested in the emerging field of data journalism
  • Intro to D3.js (Site, Apache 2.0) - The tutorial provides a quick intro to D3.js, a Javascript library for creating data visualizations in the browser.
  • The Nature of Code (Site, cc-nc, LGPL) - This book focuses on the programming strategies and techniques behind computer simulations of natural systems using Processing
  • Data Science 45-min Intros (Public Domain) - Ipython notebook presentations for getting starting with basic programming, statistics and machine learning techniques
  • Data + Design (Site, cc-nc-sa) - A Simple Introduction to Preparing and Visualizing Information
  • D3 101 Screencasts (Site, MIT) - Curran Kelleher's D3.js screencasts
  • Thematic Cartography Guide (Site, cc-nc) - A short, friendly guide to basic principles of thematic mapping.

Android Development

IOS Development


Programming Languages


  • C Style (cc-sa) - My favorite C programming practices



  • Bootstrap (Site, cc) - Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web.
  • idiomatic CSS (cc) - Principles of writing consistent
  • Font Awesome (Site, cc) - The iconic font and CSS toolkit


  • Introduction to Programming using Fortran 95 (Site, cc-nc-sa) - This text provides an introduction to programming and problem solving using the Fortran 95 programming language.



  • ClojureDocs (Site, Eclipse Public License) - community-powered documentation and examples repository for the Clojure programming language
  • Clojure Documentation (Site, cc) - community-driven documentation site for the Clojure programming language



  • Thinking Forth Project Thinking Forth Project (PDF, cc-nc-sa)




  • Learn You a Haskell for Great Good! (Site, cc-nc-sa) - Learn You a Haskell for Great Good! is a hilarious, illustrated guide to this complex functional language
  • How to learn Haskell (cc0) - This is a recommended path for learning Haskell based on experience helping others
  • Haskell By Example (Site, cc) - Haskell by Example is a port of Go by Example to Haskell


  • Learning JavaScript Design Patterns (Site, cc-nc-nd) - In this book we will explore applying both classical and modern design patterns to the JavaScript programming language
  • JavaScript-Garden (Site, MIT) - A collection of documentation about the most quirky parts of the JavaScript language
  • ECMAScript 6 Features (MIT) - ECMAScript 6, also known as ECMAScript 2015, is the latest version of the ECMAScript standard
  • React Primer Draft (GNU) - A primer for building Single-Page Applications with React
  • Angular Style Guide (MIT) - Angular Style Guide: A starting point for Angular development teams to provide consistency through good practices
  • JavaScript : The Right Way (Site, cc-nc-sa) - This is a guide intended to introduce new developers to JavaScript and help experienced developers learn more about its best practices
  • Idiomatic JavaScript (cc) - Principles of Writing Consistent, Idiomatic JavaScript
  • Angular Test Patterns (MIT) - A High-Quality Guide for Testing Angular 1.x Applications
  • Airbnb JavaScript Style Guide (MIT) - A mostly reasonable approach to JavaScript
  • JavaScript Garden (Site, MIT) - A collection of documentation about the most quirky parts of the JavaScript language
  • Node.js Style Guide (cc-sa) - A guide for styling your node.js / JavaScript code. Fork & adjust to your taste
  • Node.js Best Practices (Site, MIT) - This is a list of best practices for writing robust Node.js code. It is inspired by other guilds such as Felix Geisendörfer's Node Style Guide and what is popular within the community
  • function qualityGuide () { (MIT) - This style guide aims to provide the ground rules for an application's JavaScript code, such that it's highly readable and consistent across different developers on a team
  • The Node Beginner Book (Site, cc-nc-sa) - The Node Beginner Book is a comprehensive introduction to Node.js and some of the more advanced JavaScript topics like functional programming
  • Learn You The Node.js For Much Win! (MIT) - Learn You The Node.js For Much Win! An intro to Node.js via a set of self-guided workshops.
  • Understanding ECMAScript 6 (Site, cc-nc-nd) - ECMAScript 6 is coming, are you ready? There's a lot of new concepts to learn and understand. Get a headstart with this book!
  • An introduction to Node.js (cc-sa) - a short introduction to node.js
  • stream-handbook (cc) - how to write node programs with streams
  • You Don't Know JS (Site, cc-nc-nd) - A book series on JavaScript. @YDKJS on twitter.
  • CasperJS (Site, MIT) - Documentation for CasperJS
  • Ember.js Guide (Site, MIT) - Official Guide for Ember.js
  • React Document (Site, cc) - Documentation for React
  • Flux Application Architecture (Site, cc) - Documenatiton for Flux application architecture
  • Redux Document (Site, MIT) - Documentation for Redux


  • DIY Lisp (BSD) - A hands-on, test driven guide to implementing a simple programming language
  • Build Your Own Lisp (Site, cc-nc-sa) - Learn C and build your own programming language in under 1000 lines of code!



  • Real World OCaml (Site, cc-nc-nd) - Real World OCaml is aimed at programmers who have some experience with conventional programming languages, but not specifically with statically typed functional programming


  • PHP: The Right Way (Site, by-nc-sa) - An easy-to-read, quick reference for PHP best practices, accepted coding standards, and links to authoritative tutorials around the Web


  • Python Enhancement Proposals (Site, Open Publication License)
  • The Hitchhiker’s Guide to Python! (Site, cc-nc-sa) - Python best practices guidebook, written for Humans.
  • Django Documentation (Site, bsd) - Documenatiton for Django which is python web framework
  • Dive Into Python 3 (Site, cc-sa) - Dive Into Python is a free Python book for experienced programmers
  • Explore Flask (Site, Public Domain) - Explore Flask is a book about best practices and patterns for developing web applications with Flask
  • Full Stack Python (Site, MIT) - Full Stack Python source with Pelican, Bootstrap and Markdown
  • A Byte of Python (Site, cc-sa) - "A Byte of Python" is a free book on programming using the Python language. It serves as a tutorial or guide to the Python language for a beginner audience
  • Learning to Program Using Python (Site, cc-sa)
  • A guide to Python's magic methods (Site, cc-nc-sa) - This guide is the culmination of a few months' worth of blog posts. The subject is magic methods
  • Think Python (Site, cc-nc) - How to Think Like a Computer Scientist
  • Google's Python Class (Site, cc) - this is a free class for people with a little bit of programming experience who want to learn Python



  • Introduction to R (Site, cc-nc-sa & apache 2.0) - These are notes for an introductory R workshop I am teaching for Python Programmers
  • Cookbook for R (Site, cc-sa) - The goal of the cookbook is to provide solutions to common tasks and problems in analyzing data


  • Racket Documentation (Site, LGPL) - Documentation for Racket



  • Deep into Pharo (Site, cc-sa) - Deep into Pharo is the second volume of a series of books covering Pharo
  • Pharo by example (Site, cc-sa) - Pharo by Example, intended for both students and developers, will guide you gently through the Pharo language and environment by means of a series of examples and exercises
  • Dynamic Web Development with Seaside (Site, cc-nc-sa) - Dynamic Web Development with Seaside, intended for developers, will present the core of Seaside as well as advanced features such as Web 2.0 support and deployment
  • Squeak by Example (Site, cc-sa) - Squeak by Example, intended for both students and developers, will guide you gently through the Squeak language and environment by means of a series of examples and exercises




  • GNU Emacs manual (Site, GNU-FDL) - Emacs is the extensible, customizable, self-documenting real-time display editor. This manual describes how to edit with Emacs and some of the ways to customize it
  • GNU Emacs Lisp Reference Manual (Site, GNU-FDL) - Documentation for Emacs Lisp
  • Emacs is sexy! (Site, GNU) - Simple website to share the love for Emacs
  • Learn Vimscript the Hard Way (Site, custom license) - Learn Vimscript the Hard Way is a book for users of the Vim editor who want to learn how to customize Vim
  • The Emacs Lisp Style Guide (cc) - This Emacs Lisp style guide recommends best practices so that real-world Emacs Lisp programmers can write code that can be maintained by other real-world Emacs Lisp programmers
  • A Byte of Vim (Site, cc-sa) - “A Byte of Vim” is a book which aims to help you to learn how to use the Vim editor (version 7), even if all you know is how to use the computer keyboard


  • Pro Git (Site, cc-nc-sa) - An open source book on Git by Scott Chacon and Ben Straub
  • A Git Style Guide (cc) - This is a Git Style Guide inspired by How to Get Your Change Into the Linux Kernel, the git man pages and various practices popular among the community.
  • Github Cheatsheet (MIT) - A list of cool features of Git and GitHub
  • Git Magic (Site, GPL) - A guide to using Git
  • Git it (Site, BSD) - A workshopper for learning Git and GitHub.


  • Gibber User Manual (Site, cc) - Gibber is a creative coding environment that runs in the browser. This book explains why Gibber was created, what its features are and how to use it
  • Upstart Intro, Cookbook and Best Practises (Site, cc-sa)

Library Documentation

Other Languages


  • 점프 투 파이썬 (Site, cc-nc-nd) - 이 책은 파이썬이란 언어를 처음 접해보는 독자들과 프로그래밍을 한 번도 해 본적이 없는 사람들을 대상으로 한다. 프로그래밍을 할 때 사용되는 전문적인 용어들을 알기 쉽게 풀어서 쓰려고 노력하였으며, 파이썬이란 언어의 개별적인 특성만을 강조하지 않고 프로그래밍 전반에 관한 사항을 파이썬이란 언어를 통해 알 수 있도록 알기 쉽게 설명하였다.
  • emacsbook (cc-nc)
  • 꾸준히, 자유롭게, 즐겁게 : 한국 오픈 소스 개발자들 이야기 (Site, cc-nc-nd)



Another Documents List / References

  • Beautiful Docs - Pointers to useful, well-written, and otherwise beautiful documentation
  • Papers We Love - Papers from the computer science community to read and discuss
  • Awesome Awesomeness - A curated list of amazingly awesome awesomeness
  • Awesome - A curated list of awesome lists
  • Readings in Databases - A list of papers essential to understanding databases and building new data systems
  • Python Reference - Useful functions, tutorials, and other Python-related things
  • Guides - Design and development guides
  • List of Free Learning Resources - Freely available programming books
  • Gitbook - A modern publishing toolchain. Simply taking you from ideas to finished, polished books
  • O'Reilly Open Books - O'Reilly has published a number of Open Books--books with various forms of "open" copyright--over the years. The reasons for "opening" copyright, as well as the specific license agreements under which they are opened, are as varied as our authors
  • OnlineProgrammingBooks.com - This site lists free eBooks and online books related to programming, computer science, software engineering, web design, mobile app development, networking, databases, information technology, AI, graphics and computer hardware which are provided by publishers or authors on their websites legally
  • Free Software Foundation - books/documentation
  • Green Tea Press - Free books by Allen Downey
  • Wikipedia books(community books)
  • Python Books - PythonBooks is a showcase of the best free ebooks about Python
  • JSbooks - The best free JavaScript resources