CVS: http://www.gnu.org/software/cvs/cvs.html
GATS/SABER: http://saber.gats-inc.com/
Perl: http://www.perl.org/
PostgreSQL: http://postgresql.nextpath.com/
Samba: http://www.samba.org/
VNC: http://www.uk.research.att.com/vnc/
Xmgr: http://plasma-gate.weizmann.ac.il/Xmgr/