Trac is a web application which provides issue tracking, timelines and Wiki with Subversion integration. Trac is written in Python and can be either run as a cgi program (any web server) or within mod_python (Apache).
SharpForge is an open source, c#, dot net 2.0, easy to use project management web application. It supports multiple portals, multiple projects, subversion administration, work item tracking, project forums, release management, subversion wiki, subversion browsing & news feed aggregation. Similar to SourceForge or CodePlex but for your own team or organisation.
Collaboa is a collaborative tool for developers using Subversion.
Currently, the following features are available:
Polarion is a unified software development platform (USDP) which combines requirement management, task management, project planning and tracking change request management, and audits & metrics on top of Subversion.
TurnOverSVN is Subversion and issue tracking, release management etc., for the IBM iSeries (OS/400).
SVN Bugzilla is Subversion-Bugzilla integration using the bugtraq properties.