collaborative development tool - Mercurial (Hg) plugin

 FusionForge provides many tools to aid collaboration in a
 development project, such as bug-tracking, task management,
 mailing-lists, SCM repository, forums, support request helper,
 web/FTP hosting, release management, etc. All these services are
 integrated into one web site and managed through a web interface.
 .
 This plugin contains the Mercurial (Hg) subsystem of FusionForge. It
 allows each FusionForge project to have its own Mercurial repository,
 and gives some control over it to the project's administrator.