> The license for Perforce isnt really
> free for non-commercial use. It is a
> license free for up to two users and two
> client workspaces.
Since 2005.1 it's been increased to two users and five workspaces and Perforce is 100% free (as in beer) for Open Source use.
> Other than that, perforce rocks. It is
> something of a mix between subversion
> and ClearCase.