'’Project’’   '’Version Control System’’   '’Notes’’  
  Apache   CVS, Subversion      
  Mozilla   CVS   Main contributors are commercial companies (AOL, Red Hat) but also many outside developers  
  Eclipse   CVS      
  GNOME   CVS      
  Python   Subversion      
  Slashdot (slashcode)   CVS      
  Perl   Perforce   Access only to developers with write access. Others get rsync of snapshot.  
  mod_perl   SVN      
  J2SE   Sun internal tool based on SCCS   “While there are good reasons to use CVS, Sun can’t move to CVS for J2SE development without losing important functionality.” link  
  Thousands on SF.net   Mostly CVS, some SVN      
  OpenOffice   CVS      
  Wine   CVS