CVS

CVS (Concurent Versioning System) is a version control system, an important component of Source Configuration Management (SCM). Using it, you can record the history of source files and documents. However, its use is being phased-out in favor of more modern SCM systems such as Subversion, Mercurial, and Git.

Using CVS is not advised although there is a guide to setting up a CVS server.

CVS