I don't know if they fixed VSS in later versions, but I used it in a team environment from 2000-2002, and heard of other people using it similarly even later th

I don't know if they fixed VSS in later versions, but I used it in a team environment from 2000-2002, and heard of other people using it similarly even later than that (including for art assets as well as code...), seemingly without any problems. As well as the oft-unjustly-maligned check in/check out model, two other things it has going for it are that administration is pretty easy and it has both a command line client and a GUI client. (Which might sound like a ridiculous thing to say, but I have used some systems that have one but not the other - hopefully very rare these days though.) This isn't really a recommendation for it, though, unless they've put a huge amount of work into it over the past fifteen-odd years (which somehow I doubt). To get the same check in/check out workflow, you could try Perforce (though I heard from somebody that did it on AWS that the initial setup can be a bit fiddly) or SVN (though check in/check out evidently isn't quite how it's designed to be used, because (a) this is not the default, and (b) the performance can be pretty crappy).