I came across Unfuddle today. It's an ASP model that offers hosting for project management tools, source code, and bug/issue tickets. Plans range from free to $100/month.

I've been looking for a simple bug tracking solution, and while Fuddle may not be the right way to go (for me), it seems like an interesting offering. They use Subversion for source code hosting, and a Rails-built platform for managing projects, tracking to-dos and milestones, handling bugs and feature requests, entering time spent, and keeping a project moving along. Might be a good option if you have a small team of developers and don't want to deal with setting up a source code repository, and you're tired of emailing Excel spreadsheets around.

Note that hosting companies like Dreamhost offer easy Subversion setup, but AFAIK don't offer the other stuff -- issue and project tracking.