eSvn!

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.TortoiseSVN is free to use. You dont need to get a loan or pay a full years salary to use it.

SlikSVN is a free subversion client for the command line.

Comfortable graphical SVN client for linux.

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 client C++ API.Features * Simple - provides an easy to use interface * Efficient - simple for beginners but flexible enough to increase productivity for experienced users * Portable - runs on any platform on which Subversion and wxWidgets can run: Linux, Windows, Mac OS/X, Solaris, etc. * Fast - entirely written in C++ * Multilingual - it has been translated to many languages * Full support for Unicode »

AnkhSVN is a Subversion SourceControl Provider for Visual Studio. The software allows you to perform the most common version control operations directly from inside the Microsoft Visual Studio IDE. With AnkhSVN you no longer need to leave your IDE to perform tasks like viewing the status of your source code, updating your Subversion working copy and committing changes. You can even browse your repository and you can plug-in your favorite diff tool.

Syncro SVN Client makes easier document and code sharing between content authors or developers. This multiplatform Subversion front-end allows you to browse repositories, check for changes, commit changes, update your working copy and examine the revision history.