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"

Open Data Structures

(Site, cc) - To provide a high-quality open content data structures textbook that is both mathematically rigorous and provides complete implementation

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

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

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

LearnDataScience

(BSD) - Open Content for self-directed learning in data science

Think Stats

(Site, cc-sa) - Probability and Statistics for Programmers

Bayesian Methods for Hackers

(Site, MIT) - An intro to Bayesian methods and probabilistic programming from a computation/understanding-first, mathematics-second point of view

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

Ops School Curriculum

(Site, cc) - Ops School is a comprehensive program that will help you learn to be an operations engineer

Twelve Factor App

(Site, MIT) - The twelve-factor app is a methodology for building software-as-a-service apps

.htaccess Snippets

(Public Domain) - A collection of useful .htaccess snippets, all in one place.

Travis CI

(Site, MIT) - Documentation for Travis

CoreOS Documentation

(Site, Apache 2.0) - Documentation for CoreOS

Packer Documentation

(Site, MPL) - Documentation for Packer

The Art of Command Line

(cc-sa) - Master the command line, in one page

Command Line Text Processing

(Site, cc-nc-sa) - From finding text to search and replace, from sorting to beautifying text and more

Linux Command Line

(Site, cc-nc-sa) - Introduction to Linux commands and Shell scripting

Homotopy type theory

(Site, BSD) - Homotopy Type Theory is an interpretation of Martin-Löf’s intensional type theory into abstract homotopy theory.

Collision Detection

(Site, cc-nc-sa) - A book and examples on collision detection

The Architecture of Open Source Applications 1

(Site, cc-nc-sa)

Free Software Free Society: Selected Essays

(Site, GNU-FDL) - The Architecture of Open Source Applications

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!

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?”

The Concise TypeScript Book

(Site, cc-by) - A free and open-source TypeScript guide covering fundamentals through advanced concepts.

Elasticsearch - The Definitive Guide

(Site, cc-nc-nd) - The Definitive Guide to Elasticsearch

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.

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

Write the Docs

(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.

Prose for Programmers

(cc-nc-nd) - A book to help software developers write better prose.

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.

Best practices in Android development

(cc) - Do's and Don'ts for Android development, by Futurice developers

iOS Good Practices

(cc) - Good ideas for iOS development, by Futurice developers.

iOS Developer and Designer Interview Questions

(MIT) - A small guide to help those looking to hire a developer or designer for iOS work.

Cocktails for programmers

(MIT) - Сocktails for programmers. Коктейли для программистов.

Solarized

(Site, MIT) - Precision colors for machines and people

ØMQ - The Guide

(Site cc-nc-sa) - Learning and Using ØMQ

NPR Visuals' Best Practices

(cc) - Best practices and coding conventions for the NPR Visuals team.

10up Engineering Best Practices

(Site, MIT) - This guide dictates how we, as a company, engineer websites

Peco REAMDE

(MIT) - Documenatation for Peco(Simplistic interactive filtering tool)

Learn X in Y minutes

(Site, cc-sa) - Take a whirlwind tour of your next favorite language. Community-driven!

RxMarbles

(Site, BSD) - Interactive diagrams of Rx Observables

Some Assembly Required

(cc-sa) - An approachable introduction to Assembly

C Style

(cc-sa) - My favorite C programming practices

Cofeescript Cookbook

(Site, cc) - CoffeeScript recipes for the community by the community.

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

Why's Poignant Guide to Ruby

(Site, cc-sa) - This is just a small Ruby book. It won’t crush you. It’s light as a feather

Rails Guide

(Site, cc-sa) - Official Guide for Ruby on Rails

The Rails Style Guide

(cc) - A community-driven Ruby on Rails 4 style guide

Ruby Style Guide

(cc) - A community-driven Ruby coding style guide

Better Spec

(Site, MIT) - RSpec Best Practices

Ruby Hacking Guide

(Site, cc-nc-sa) - Ruby hacking guide english translation

Ruby Best Practices

(cc-nc-sa) - Ruby Best Practices, by Gregory Brown

Neo Ruby Koans

(Site, cc-nc-sa) - A set of Koans to teach the Ruby language

Middleman

(Site, cc) - Documentation for Middleman

Jekyll

(Site, MIT) - Documentation for Jekyll

Ruby Scripting

(Site, cc-nc-sa) - example based guide for Ruby scripting

Ruby Regexp

(Site, cc-nc-sa) - step by step guide to Ruby regular expressions

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

Elixir Getting Started

(Site, Apache 2.0) - Official Elixir tutorial

repo-30-days-of-elixir

(MIT) - A walk through the Elixir language in 30 exercises

Elixir Style Guide

(cc) - A community driven style guide for Elixir

Structure and Interpretation of Computer Program

(Site, cc-sa) - Structure and Interpretation of Computer Programs, the LFE edition

Go by Example

(cc) - Go by Example is a hands-on introduction to Go using annotated example programs

Build Web Application With Golang

(cc-sa) - A golang ebook intro how to build a web with golang

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

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

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.

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

JavaScript RegExp

(Site, cc-nc-sa) - step by step guide to JavaScript regular expressions

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!

NYTimes Objective-C Style Guide

(MIT) - This style guide outlines the coding conventions of the iOS teams at The New York Times.

Perl intro

(Site, cc-nc-sa) - Introductory course for Perl 5 through examples

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

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

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

A Whirlwind Tour of Python

(Site, cc0) - fast-paced introduction to essential components of the Python language for researchers and developers who are already familiar with programming in another language

Practical Python Programming

(Site, cc-sa) - covers foundational aspects of Python programming with an emphasis on script writing, data manipulation, and program organization

Python Basics

(Site, cc-nc-sa) - Introduction to Python

Think DSP

(Site, cc-nc) - introduction to Digital Signal Processing in Python

Python re(gex)?

(Site, cc-nc-sa) - step by step guide to learning Python regular expressions

The Rust Programming Language

(Site, MIT) - Official Guide for Rust

Rust by Example

(Site, MIT) - Rust by Example is a collection of examples that illustrate various Rust concepts and the standard libraries

Rust For Rubyists

(Site, AGPL) - Rust for Rubyists was the first community tutorial for Rust

Introduction to R

(Site, cc-nc-sa & apache 2.0) - These are notes for an introductory R workshop I am teaching for Python Programmers

Scala Best Practices

(cc) - A collection of best practices, friendly to people that want to contribute

twitter.github.com/effectivescala

(Site, cc-by) - Twitter's Effective Scala Guide

Scala School!

(Site, Apache 2.0) - Lessons in the Fundamentals of Scala

Nginx Server Configs

(MIT) - Nginx HTTP server boilerplate configs

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

Vim Reference

(Site, cc-nc-sa) - guide for beginner to intermediate users

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.

riak docs

(Site, cc) - Documentation for riak

Vagrant

(Site, MIT) - Documentation for Vagrant

Docker

(Site, Apache 2.0) - Documentation for Docker

phpMyAdmin

(Site, GPL) - Documentation for phpMyAdmin

OmegaT

(Site, GPL) - Documentation for OmegaT

Sphinx documentation

(Site, BSD) - Documentation for Sphinx

Ansible Documentation

(Site, GPL) - Documentation for Ansible

emacsbook

(cc-nc)

JavaScript 标准参考教程

(Site, cc-nc) - A open JavaScript tutorial book, focusing on client devices, written in Chinese

Build Web Application With Golang

(cc-sa) - A golang ebook intro how to build a web with golang

七天学会NodeJS

(Site, MIT) - 这是一本NodeJS新手入门教程，涵盖了使用NodeJS开发各种程序所必要的知识，请点击以下链接阅读

C++ 并发编程指南

(MIT) - A Detailed Cplusplus Concurrency Tutorial

Backbone.js入门教程

(MIT) - backbonejs学习笔记更新版，使用backbone1.1.0

ECMAScript 6入门

(Site, cc-nc) - 一本开源的JavaScript语言教程，全面介绍ECMAScript 6新增的语法特性

Nginx开发从入门到精通

(Site, cc-nc) - 一本开源的Nginx开发教程，全面介绍nginx模块的开发以及它的内部原理

FreeBSD 从入门到跑路

(Site, cc-by) - 这是一本 FreeBSD 操作系统书籍，还包含一些 OpenBSD、NetBSD、DragonFly BSD、TwinCAT/BSD 等 BSD 家族操作系统的快速入门章节

Android Development Training Course

(Site, Apache 2.0) - Training course repository for android app development

はてな教科書

(cc-nc-sa) - はてな研修用教科書

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