Trac
I recently came across Trac, a minimalistic web-based project-management and bug-tracking system. Normally, these kind of products come with a plethora of features; but turn out be seldom used. It is better to have a light-weight product with just-enough features, but easy to use. This is the idea behind Trac. It is the best fit for developers to organize their work without disturbing the development process which is deployed in the team/organization. Trac is Wiki-based and interfaces with Subversion.
The only problem is that it is not trivial to install it on a desktop due to the intricate requirements for particular version of Python and other software. But we managed to get it running along with its WebAdmin plugin. There are quite a few Trac Hosting sites like CvsDude, WebFaction.
