IdeaTorrent | drupal.org

IdeaTorrent is what can be defined as an "open innovation software": it lets people submit their ideas, brainstorm them, and vote on them. The most popular ideas and requests are then easily assessable.
That's a very interesting mean for a project to have an insight on the demands of his user base!

One of the biggest live example is http://brainstorm.ubuntu.com.

The homepage of the project, where you can download the current production code (0.9), is at http://www.ideatorrent.org.