I'm trying to amass a list of programming books with opensource licenses, like Creative Commons, GPL, etc. The books can be about a particular programming language or about computers in general. Hoping you guys could help:

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Languages

BASH

• Advanced Bash-Scripting Guide (An in-depth exploration of the art of shell scripting)

C

• The C book

C++

• Thinking in C++
• C++ Annotations
• How to Think Like a Computer Scientist

C#

• .NET Book Zero: What the C or C++ Programmer Needs to Know About C# and the .NET Framework
• Illustrated C# 2008 (Dead Link)
• Data Structures and Algorithms with Object-Oriented Design Patterns in C#
• Threading in C#

Common Lisp

• Practical Common Lisp
• On Lisp

Java

• Thinking in Java
• How to Think Like a Computer Scientist
• Java Thin-Client Programming

JavaScript

• Eloquent JavaScript

Haskell

• Real world Haskell
• Learn You a Haskell for Great Good!

Objective-C

• The Objective-C Programming Language

Perl

• Extreme Perl (license not specified - home page is saying "freely available")
• The Mason Book (Open Publication License)
• Practical mod_perl (CreativeCommons Attribution Share-Alike License)
• Higher-Order Perl
• Learning Perl the Hard Way

PHP

• Practical PHP Programming
• Zend Framework: Survive the Deep End

PowerShell

• Mastering PowerShell

Prolog

• Building Expert Systems in Prolog
• Adventure in Prolog
• Prolog Programming A First Course
• Logic, Programming and Prolog (2ed)
• Introduction to Prolog for Mathematicians
• Learn Prolog Now!
• Natural Language Processing Techniques in Prolog

Python

• Dive Into Python
• Dive Into Python 3
• How to Think Like a Computer Scientist
• A Byte of Python
• Python for Fun
• Invent Your Own Computer Games With Python

Ruby

• Why's (Poignant) Guide to Ruby
• Programming Ruby - The Pragmatic Programmer's Guide
• Mr. Neighborly's Humble Little Ruby Book

SQL

• Practical PostgreSQL

x86 assembly

• Paul Carter's tutorial

Lua

• Programming In Lua (for v5 but still largely relevant)

Algorithms and Data Structures

• Algorithms
• Data Structures and Algorithms with Object-Oriented Design Patterns in Java
• Planning Algorithms

Frameworks/Projects

• The Django Book
• The Pylons Book
• Introduction to Design Patterns in C++ with Qt 4 (Open Publication License)

Version control

• The SVN Book
• Mercurial: The Definitive Guide
• Pro Git

UNIX / Linux

• The Art of Unix Programming
• Linux Device Drivers, Third Edition

Others

• Structure and Interpretation of Computer Programs
• The Little Book of Semaphores
• Mathematical Logic - an Introduction
• An Introduction to the Theory of Computation
• Developers Developers Developers Developers
• Linkers and loaders
• Beej's Guide to Network Programming
• Maven: The Definitive Guide

I will expand on this list as I get comments or when I think of more :D

Related:

• Programming texts and reference material for my Kindle
• What are some good free programming books?
• Can anyone recommend a free software engineering book?

Edit: Oh I didn't notice the community wiki feature. Feel free to edit your suggestions right in!