Any OpenSource Projects available...Like this?

Hi,

I am looking forward to see an Open Source Projects in ...
(1) Yellow Pages
(2) City Portal
(3) Classifieds
(4) Dating
(5) Forums
(6) Jobs
(7) Real Estate

The main problem on GitHub and SourceForge is that.. Many are active in
first few weeks and then suddenly disappear.Its not safe to depend on
new projects announced just for fun.

I already have listed www.opensourcerails.com as an reference, but still
few of my requirements are not available there. It would be nice if you
can mention your *FAVOURITE*, *ACTIVE* and * FULLY WORKING* Open source
project or reference here.

Thanks

SoftMind.