BeyondCVS is an Eclipe plug-in that enables using Beyond Compare (externally) for comparing files and folders. It also allows comparing a single file to a previous revision in CVS/SVN or Local History. There is also support for opening Putty and WinSCP.
A "plugin" to CVS which will update the dotProject management suite. It is written in Perl, and will process the cvs commit log, checking for required/optional dotProject parameters for a task, and then update the mysql database which dotProject uses.