vcs_duplicate.txt

In software engineering, version control (also known as revision control, source control, or source code management) is system
 responsible for managing changes to computer programs, documents, large web sites, or other collections of information.
 Top  Version Control Software Tools :
1) Git. Git is one of the best version control tools that is available in the present market.
2) CVS. It is yet another most popular revision control system.
3) SVN. Apache Subversion, abbreviated as SVN 
4) Mercurial. Mercurial is a distributed revision-control tool which is written in python