cb-svn is a plugin for the code::blocks IDE providing advanced Subversion integration via the project manager popup menu. As an alternative, cb-svn also offers basic CVS support.
TUsvnAddIn (svn) is a free open source TortoiseSVN add-in for visual studio. TUsvnAddIn allows developers to use some of the TortoiseSVN features over Visual Studio 2005/2008/2010. Users may also use the code as reference as they please.
Jistory is an Eclipse plug-in for history sensitive detection of design anomalies in source code. This plug-in aims to aid the developer in writing better code by using history sensitive heuristics to analyse multiple versions of source code.