Git is open-source, version control software that allows you to combine changes without compromising stable work. from A List Apart.

the real role of version control in your creative toolkit.

This is the website for the Pro Git book, written by Scott Chacon and published by Apress. Here you can find the full content of the book, a blog with tips and updates about Git and the book and open source projects related to Git or referenced in the book.

SmartSVN is a graphical client for the Open Source version control system Subversion (SVN).

Mercurial is not only fast, it also provides a smooth transition for developers who are already comfortable with Subversion’s basic command set. And it gives you easy access to common functionality without resorting to cryptic command-line flags. It works well on all major operating systems, including Microsoft Windows. from PeepCode.

to track changes and avoid general chaos.

secure git hosting and collaborative development.

open source, distributed version control system.

project management and workflow. from a list apart.