"Karmanyevadhikaraste ma phaleshu kadachana, Ma karma phala hetur bhurmatey sangostva akarmani."

SVN-Sub Version

It is a centralised repository keeping all the team members work in it so that iits easy to access eevryone's else work and to be n sync. each time when member make some changes it will be saved with a version number and keep all the versions.
Subversion is an open source version control system