StackOverflow 上有位網友（xenoterracide）提問：
我正試着蒐集整理一個可在網上免費閱讀的計算機編程書籍列表。這些書可以是某種特定編程語言，也可以計算機方面通用書籍。網上有哪些免費可用的書籍呢？
下面是一些網友在回覆中的推薦資源，其中有視頻、大學課程、編程語言教程網站，由伯樂在線整理編譯。
一、George Stocker 提供了一大串，分類如下：
Meta-Lists
How to Design Programs: An Introduction to Computing and Programming
25 Free Computer Science Ebooks
Sofware Program Managers Network – Free EBooks
Galileo Computing (德語)
Graphics Programming 圖形編程
GPU Gems 2 – ch 8,14,18,29,30 as pdf
Graphics Programming Black Book
DirectX manual (draft)
Learning Modern 3D Graphics Programming (draft)
Language Agnostic
Object-Oriented Reengineering Patterns
Computer Musings (由唐納德·克努斯授課)
Patterns and Practices: Application Architecture Guide 2.0
Digital Signal Processing For Engineers and Scientists
Structure and Interpretation of Computer Programs
Best Kept Secrets of Peer Code Review
NASA Software Measurement Handbook
NASA Manager Handbook for Software Development (PDF)
Introduction to Functional Programming (經典課程)
Guide to the Software Engineering Body of Knowledge
Algorithms (draft)
Data Structures and Algorithms
Essential Skills for Agile Development
Programming Languages: Application and Interpretation
Patterns of Software: Tales from the Software Community (PDF)
How to write Unmaintainable Code
The Art of Unix Programming 《UNIX 編程藝術》
The Definitive Guide to Building Code Quality
How to Think Like a Computer Scientist
Mathematical Logic – an Introduction (PDF)
An Introduction to the Theory of Computation
Developers Developers Developers Developers
Producing Open Source Software
How to Write Parallel Programs
97 Things Every Programmer Should Know（這本書有中文版《程序員應該知道的97件事》）
Introduction to Information Retrieval
Is Parallel Programming Hard, And, If So, What Can You Do About It?
Type Theory and Functional Programming
Getting started with Open source development (PDF)
Database Fundamentals (PDF)
Summary of the GoF Design Patterns
Algorithms and Data-Structures (PDF)
Compiler Construction (PDF)
Project Oberon (PDF)
Essential Skills for Agile Development
Data-Intensive Text Processing with MapReduce (PDF)
Understanding IP Addressing: Everything you ever wanted to know (PDF)
Operating Systems and Middleware (PDF and LaTeX)
ASP.NET MVC
Assembly Language 彙編語言
ProgrammingGroundUp (PDF)
Paul Carter’s Tutorial on x86 Assembly
Software optimization resources by Agner Fog
Bash
C / C++
The new C standard – an annotated reference
Matters Computational: Ideas, Algorithms, Source Code, by Jorg Arndt
Thinking in C++， Second Edition （《C++編程思想》）
Software optimization resources by Agner Fog
Introduction to Design Patterns in C++ with Qt 4 (PDF)
Object Oriented Programming in C (PDF)
Beej’s Guide to Network Programming
Also see: The Definitive C++ Book Guide and List
C#
請參見下面 .NET 方面的
Clojure
ColdFusion
DB2
Getting started with IBM Data Studio for DB2 (PDF)
Getting started with IBM DB2 development (PDF)
Getting started with DB2 Express-C (PDF)
Delphi / Pascal
Essential Pascal Version 1 and 2
Django
Erlang
Learn You Some Erlang For Great Good
Flex
Getting started with Adobe Flex (PDF)
F#
F Sharp Programming in Wikibooks
Forth
Git
Git From The Bottom Up (PDF)
Grails
Haskell
HTML / CSS
Java
Thinking in Java （《Java 編程思想》）
How to Think Like a Computer Scientist
OSGi in Practice (PDF)
Java 6 Tutorial (PDF)
JavaScript
jQuery Fundamentals (starts with JavaScript basics)
Mozilla Developer Network’s JavaScript Guide
Essential Javascript & jQuery Design Patterns for Beginners
Latex
The Not So Short Introduction to LATEX (perfect for beginners 特別適合初學者)
Linux
Lisp
A Gentle Introduction to Symbolic Computation (PDF)
Common Lisp the Language, 2nd Edition
Let Over Lambda – 50 Years of Lisp
Natural Language Processing in Lisp
Lua
Programming In Lua (for v5 but still largely relevant)
Lua Programming Gems （不完全免費，但有很多免費的章節及代碼）
Maven
Repository Management with Nexus
Developing with Eclipse and Maven
Mercurial
Mercurial: The Definitive Guide
HGInit – Mercurial Tutorial by Joel Spolsky
Nemerle
See .NET below
.NET (C# / VB / Nemerle / Visual Studio)
C# School (covers C# 1.0 and 2.0)
Visual Studio Tips and Tricks (VS 2003-2005 only)
C# Yellow Book (intro to programming)
Data Structures and Algorithms with Object-Oriented Design Patterns in C#
Illustrated C# 2008 (.zip, dead link)
O’Reilly’s C# Pocket Reference Manual (dead link)
NoSQL
Oberon
Programming in Oberon (PDF)
Objective-C
The Objective-C Programming Language
OCaml
Unix System Programming in OCaml
Introduction to OCaml (PDF)
Oracle Server
Oracle’s Guides and Manuals
Oracle PL/SQL
PL/SQL Packages and Types Reference
Steven Feuerstein’s PL/SQL Obsession – Videos and Presentations
Parrot / Perl 6
Using Perl 6 (work in progress)
Perl
Perl Free Online EBooks (meta-list)
Embedding Perl in HTML with Mason
Web Client Programming with Perl
PHP
Practical PHP Programming (wiki containing O’Reilly’s PHP In a Nutshell)
Zend Framework: Survive the Deep End
PowerShell
Prolog
Building Expert Systems in Prolog
Prolog Programming A First Course
Logic, Programming and Prolog (2ed)
Introduction to Prolog for Mathematicians
Natural Language Processing in Prolog
Natural Language Processing Techniques in Prolog
PostgreSQL
Python
Building Skills in Python Version 2.5
Python Free Online Ebooks (meta-list)
Think Python (PDF)
Data Structures and Algorithms in Python
How to Think Like a Computer Scientist: Learning with Python
Invent Your Own Computer Games With Python
Natural Language Processing with Python
R
Computational Statistics, Jeremy Penzer
Ruby
Why’s (Poignant) Guide to Ruby (mirror)
Mr. Neighborly’s Humble Little Ruby Book
Ruby on Rails
Ruby on Rails Tutorial: Learn Rails By Example
Scala
Programming in Scala, First Edition
A Scala Tutorial for Java programmers (PDF)
Scala By Example (PDF)
Xtrace (Github)
List (Github)
Pro Scala: Monadic Design Patterns for the Web
Exploring Lift (published earlier as “The Definitive Guide to Lift”， PDF)
Scheme
The Scheme Programming Language (Edition 4)
Smalltalk
Free Online Smalltalk Books (meta-list)
Squeak By Example (Smalltalk IDE)
Subversion
Subversion Version Control (PDF)
Version Control with Subversion
SQL (implementation agnostic)
Developing Time-Oriented Database Applications in SQL
Use The Index， Luke! (a guide to SQL database performance for developers)
Teradata
Vim
交互式教程網站：http://t.cn/aep0mV
很全的 Vim 速查卡：http://t.cn/aBPFPk
Websphere
Getting started with WebSphere (PDF)
二、 TG 推薦了麻省理工學院的一門課程
《Structure and Interpretation of computer programs / 計算機程序員結構和解析》，這門課程視頻地址是：http://groups.csail.mit.edu/mac/classes/6.001/abelson-sussman-lectures/
三、 Gatekiller 推薦的資源如下：
Graphics Programing Black Book
List of Free Online Python Books
List of Free Online Perl Books
List of Free Online Smalltalk Books
Introduction to Functional Programming
四、ani625推薦了一些 Linux 相關書籍
Advanced Linux Programming by CodeSourcery LLC
Java Application Development on Linux by Carl Albing and Michael Schwarz (PDF)
Secure Programming for Linux and Unix
The Linux Development Platform
Secure Programming for Linux and Unix HOWTO
Linux Kernel Module Programming Guide by Ori Pomerantz
GTK+/Gnome Application Development
GNU Autoconf, Automake and Libtool
The Linux Kernel Module Programming Guide
上面這4個推薦，是得票數最高的前4位。下面這些得票數不太高的，從中挑選了一些。
The Django Book, GNU Free Document License
Mercurial (Hg) book by Bryan O’Sullivan. （Mercurial 是一個分佈式版本控制軟件）
37 Signals’ 公司的 “Getting Real” 也提供免費在線閱讀。
《Clever Algorithms: Nature-Inspired Programming Recipes 》描述了人工智能領域中的 45 個算法。所以這些算法的描述都連貫並完整，確保廣大受衆可以理解。 這本書也有免費的 PDF版，也可以在線免費閱讀。
麻省理工學院關於計算機科學的開源課程：http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/index.htm
《Practical Common Lisp（實用 Common Lisp 編程）》Sergio Acosta 強烈推薦的，特別適合對 Lisp 感興趣的初學者，雖然這本書的紙質版並不免費，但作者 Peter Seibel 允許免費在線閱讀。