RunVCS is a restricted shell that allows the user to run version control software and only access specified repositories. It also provides other useful features such as changing the username that is passed to programs. Only SVN is supported currently, but more version control systems will be supported over time.
sfre (system flight recorder editor) is a script that wraps a text editor or any arbitrary command and implements logging, file locking, and change tracking for the command executed. It is meant for helping system administrators manage a system in tandem without interfering with each other.
If you're a developer of multiple projects, you'll find yourself needing to switch between multiple different version control systems. After working in one (e.g. SVN) for an hour, you may need to switch to a different one (e.g. git). Getting your fingers to switch is the difficult part, or remembering the right command line flags to use for the given tool. That's where The One Ring comes in: it provides a constant interface to all the version control systems, and your fingers only need to remember a single command regardless of what checkout directory your shell is sitting in.
repos-tools is a set of command-line utilities to make work on your code repositories faster and easier. It lets you push, pull, build, and do other things on your repositories all at once. The supported (D)VCSes are Git, Subersion, Bazaar, and Mercurial. For GitHub users, forking, following, watching, and dealing with issues can be done from the shell.
svn-dump-fast-export converts a textual representation of a Subversion repository into input suitable for git-fast-import and similar importers. Subversion repository dumps can be generated using the 'svnadmin dump' or 'svk admin dump' command. To support incremental imports, it puts a 'git-svn-id' line at the end of each commit log message if passed an URL on the command line. Empty directories and unknown properties are silently discarded. The resulting repository will generally require further processing to put each project in its own repository and to separate the history of each branch. The 'git filter-branch --subdirectory-filter' command may be useful for this purpose.
pepper is a commandline tool for retrieving statistics and generating reports from source code repositories. It ships with several graphical and textual reports, and is easily extensible using the Lua scripting language. It includes support for multiple version control systems, including Git and Subversion.
Repocafe helps users and admins manage subversion repositories. Admins can easily set up svn hosting. Users can create repositories and manage repo/path access rights using the self-service Web application. Authentication is LDAP-based. Using multiple LDAPs is supported. It is easy to facilitate use of large existing groups.