We are currently providing support for Subversion and
CVS. We also provide a training session for
Subversion users and administrators: Version Control with Subversion.
In addition we can provide help in the transition from a number of Version Control Systems to Subversion. In order to help you decide which version control system is the right one for you, let us include a couple of links comparing various systems.
You can read the best comparison of SCM tools as it was put together by Shlomi Fish.
In addition we recommend reading the Testimonials from Subversion users both in the Open Source world and in the corporate world.