Hi Hilmar

>At Bata/Bolivia, I used Perforce (www.perforce.com) successfully. It is free for 1-2 developers, but for larger teams, it costs a little more than VSS.
>
>Other, completely free, options, seem to exist - but I didn't test them. I think the most well-known one is called CVS.

Just a one man show yet. I'll give it a try.

Thanks for your suggestion.