Git is a free and open source distributed version control system designed to ...
Work easier Work faster Mercurial is a free, distributed source control management tool.
Welcome to subversion.apache.org, the online home of the Apache Subversion™ software project. Subversion is an open source version control system.
like GitHub but Open Source
A version control that will help you develop new features in parallel, go distributed, merge in time, and never break a build again