Not something like Gitweb because you can only BROWSE and not actually check out/in files.
I'm thinking of something like Visual SourceSafe, but web-based, and open-source, that you can host yourself.
Trac might be closer to what I'm looking for, but I've heard bad things about it.
Any other options?
EDIT: I'm working on a PHP / MySQL web development project with several developers, and we want a system that we can all access through the web (we live in different countries), can check out/in files, compare versions of files, and label files. So, think of Visual SourceSafe, but that you can use through a browser. Is there nothing like this?