While the OSS community converges to Git, with the Python bunch branching to Mercurial, the typical workplace is stuck with Subversion. The author's DVCS of choice is Fossil. These are all fine projects, with their own pros and cons, but what you usually want is just a tool to store your code tree snapshot in a safe place. They can all do that, but their language differs a tiny bit. repo brings them all down to the common root. It works by detecting which VCS are you using right now and calling that, applying necessary subcommand translation if needed.
Atlassian Stash delivers a central, secure solution for creating and managing distributed Git repositories on your own servers. It has an easy-to-use interface for adding users and groups and creating and managing repositories, and a Project Structure for logically grouping your repositories. Installed on your own network, administrators have full control over how Stash fits into their environment. It supports Atlassian’s plugin framework plus a full, open REST API for customized integrations. Key features include simple administration, easy permissions around Git repositories, LDAP (Active Directory) integration, JIRA issue tracker integration, cloning, and more.