Christophe just pointed me to Open Source Alternatives a site that allows you to find open source software alternatives to well-known commercial software .
Good tool.. but it misses a key thing.. experience .. you don't know about how big the community around a project is .. you don't know how active development around .. you only can learn that yourselve. but it's a quick pointer to new stuff .. for some people ...
Now if you could add the Ohloh database to that and integrate them..
would be nice...