Usercontent
The module adds information about user's content to his/her profile's 'view' tab grouped by content type. This allows to understand fast what is user's contribution for the site, that helps to add more community outlook to the site.
The difference from tracker.module is that it doesn't take additional tab and doesn't require additional click. Treats comments as seperate content type, what supposed to be an advantage; allows to locate each comment in thread.
Curretnly has lightweight implementation: doesn't require additional modules such as views and adds only one query per profile page view no matter how much content types it outputs.
It is a development version though, so any feedback and suggestions are welcome in this thread or via bug tracker.
Development releases