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.