This is cvs. [TRH#1] fixes some wrapper-related bugs, and attempts to fix the NFS bug that plagues cvs-1.9 when recursively removing directories (at least on NeXTs).
You must also install the GNU rcs and GNU diff packages for cvs to work.
*** Packaged for NEXTSTEP by Tom Hageman <tom@basil.icce.rug.nl> 1997/06/03