Web-based project management

I came across a note today about the dotproject open source project, a web-based project management system. I've looked at a few of these things before and none of them has quite seemed ready for prime time, including earlier versions of dotproject. However, it has now reached v1.x (v1.02 at the moment) and it looks like it is maturing quite nicely.

The set-up looks very straightforward on a LAMP (Linux/Apache/MySQL/PHP) environment. By the look of it you should be up and running with it within less than half an hour if you already have the prerequisites (of which there aren't very many) in place.