It is useful for development teams which need to work over a range of operating systems.The main page for Lin CVS is written in German, but the client has English menu options and text.It provides all the developer's utilities and has useful, color-coded diffs.
It allows you to configure a set of frequently used CVS repositories.
vss2is a Perl script to synchronize Visual Source Safe and CVS repositories.
It is intended to be used to convert from one source control system to the other and might need modification if you plan to use both systems.
Because the UI is so similar, this is probably a good set for a group trying to develop across different operating systems.
j CVS is a Java-based CVS client, with support for the main developer commands and some of the admin commands.