Source code control ports

I've been using Perforce as a source code control system now for quite some time. It is a really easy to learn, easy to use, and well supported commercial, client/server SCCS. The main drawback is that it is quite expensive. Not a problem usually with my employer, as it pays back in no time, but too much for my personal projects.

So I'm always on the lookout for good a good SCCS, as even for the smallest project I need to use it these days. Once you get used to using a good SCCS (and no, I consider Microsoft's Visual Source Safe to be pretty bad), you're hooked and you wonder how you got along without it.

Anyway, here's a note on good looking open source contender to the CVS crown, Subversion.

Port description for devel/subversion

And here's another one I've seen mentioned, Gnu-Arch. It seems to be more along the lines of Perforce, in that it use a more general client/server approach:

Port description for devel/arch