Online project management software?
 

I'm looking at trying out a few online collaborative project management systems. I'd like to hear recommendations and experiences of you guys.

So far I've been using MS Groove with some success, but am always looking for better alternatives.

BaseCamp seems popular, but no experience with it. basecamphq.com

I haven't used it so I don't know if it's any good.
http://www.horde.org/groupware/

I've been using Basecamp for a little while and I like it.

Cool I'll check those 2 out. I seem to remember airek talking about something like this but can't find the post.