TortoiseSVN

TortoiseSVN is a really easy to use Revision control / version control / source control software for Windows. Since its not an integration for a specific IDE you can use it with whatever development tools you like.

Free Open Source Windows

TortoiseGit

TortoiseGit is an easy to use client for the Git distributed revision control system. TortoiseGit adds shell integration into Windows.

Free Open Source Windows

RapidSVN

RapidSVN is a cross-platform GUI front-end for the Subversion revision system written in C++ using the wxWidgets framework. This project also includes a Subversion...

Free Open Source Mac OS X Windows Linux

kdeSVN

Comfortable graphical SVN client for linux.

Free Open Source Linux

Slik SVN

SlikSVN is a free subversion client for the command line.

Free Windows

gitti

Gitti is a Git Client for Mac OS X designed to help users never have to touch the command line. With a highly modular and organized interface, Gitti logically separates...

Free Mac OS X