TheCortex (creator of Clover) has announced a new product called FishEye. It's an SCM mining tool.

They have accepted to run it on Cactus. It's very nice. The things I like particularly:

• RSS feeds on commits, at all directory levels. For example you can subscribe to the feed that monitors changes to the xdocs files if you're interested in documentation updates.
• Annotations (for e.g.: http://fisheye.thecortex.net/viewrep/jakarta-cactus/build.xml?r=1.69)