p4 freebie license
“Little known: for up to two developers, p4 is free!” Actually, for up to two clients (separate hosts, with possibly divergent views of the master source depot) p4d is free to use for evaluation or what-have-you. As a single developer I found that this was not enough—I had a client on my Mac development station, a client here on dsandler.org, a client … whoops, that’s it, I’m done. (Without being able to code on my laptop, or synch my stuff to a machine at work.) It’s enough to pique the tastebuds a bit, but to really get into perforce you need a larger installation.