Jeremi is groupware software for realtime document sharing. It supports distributed work on different documents or files by different people or project groups. It offers an always-up-to-date view of the project and its files and coordinates the dependency of the actual file status and access to those files. Jeremi is written entirely in Java.
CVSsuck is a mirroring tool for CVS repositories. Unlike other tools such as CVSup or rsync, it uses cvs command to access the repository. So, it works well with remote repositories without a special server or shell account. However, it is inefficient because the CVS client/server protocol is not designed for mirroring.
SnapSource is a utility written in Perl to automatically and periodically take a snapshot (incremental backup) of your source code and display the modifications in a 2-column (original and modified) format similar to that of cervisia. Changes, additions, and deletions are displayed in different colors, customizable per user preference. It is not another CVS, and it is not a front-end to CVS, but it is supposed to be used in between CVS commits.
Freepository is a Web-based revision control system based on massive extensions of CVSWeb. It employs a project concept, which provides member accounts and access controls. At project creation, unique CVS repositories are created, containing their respectively unique project credentials. The database maps users to repositories. It also supports multi-file upload, secure remote command line access, and on-the-fly tarring & downloading of repositories.
cvsq (CVS queued) is a tool that enables developers with a dial-up connection to work comfortably with CVS. It accepts same arguments as CVS but instead of directly processing them, cvsq stores all requests in a queue and handles them later. This way, you can mark several files for commit and upload them when you're connected to the Net.