[cvg]

We use unfuddle, http://www.unfuddle.com . Kind of like Basecamp, but a bit more dev focused. Integrates well with Subversion.

[jessep]

also, unfuddle gives unlimited free git repos (or svn), which is nice. i don't use it for project management, but if i want to create a private remote repository and share it with folks, it's free, unlike many other choices.