Subversion

What is Subversion?

Subversion is a version control system or SCM (software configuration management) tool.

Subversion can be downloaded at subversion.tigris.org.

The most popular and well-maintained Windows Subversion tool is TortoiseSVN. Tortoise is a Windows shell extension that integrates Subversion commands into Windows Explorer.
NaughtySVN is a shell extension for the Gnome project’s Nautilus file manager.
SCPlugin is a shell extension for Mac OSX, but as of this writing it is not up to date.
RapidSVN is a cross-platform standalone Subversion GUI.
SvnX is an OSX based tool similar to RapidSVN.
Subversion itself is cross-platform and features a very well-documented command line interface.

Subclipse is a Subversion plugin for Eclipse.
AnkhSVN is a plugin for Microsoft Visual Studio, but it is no longer in active development. TortoiseSVN is the recommended tool for Windows/Microsoft developers.
Apple has some information for using Subversion with XCode

The entire O’Rielly book on Subversion is freely available online.
Bernie Zimmerman has written a very simple tutorial about Installing Subversion on Fedora Core 3