I've spent a fair amount of the weekend attempting to install FishEye from Cenqua. Its awesome that companies like Atlassian (wiki and issue tracking software) and Cenqua (coincidentally both these firms are Australian!) give away free licenses to open source projects like CiviCRM.
FishEye helps you analyze, search, share and monitor your source code repository (in our case svn). We've always wanted something a bit more fancy than what subversion offers out of the box (a vanilla http interface to the code). We also wanted better integration with JIRA and link issues to the appropriate revision of the code. FishEye promised to deliver on both these cases. We had also heard pretty good reviews of the product.