Chris Bond has started a very nice initiative - he wants to collect all 3rd party modules and user controls for Sitefinity, and to list them on a single web site. The web site is http://sfmodules.logics.co.uk/
This could grow up in something very helpful for everyone.
Chris is ready to get even a new domain for this site, if there is enough interest. Everyone is welcome to share his modules or controls - I am sure together we can make a huge list. To do so, you may contact Chris, his e-mail is listed on the web site provided above.
Once again, Thank you Chris.