Simple Firewall is a easy tool for administration of users and access control. It uses iptables for packet filtering, and saves rules with XML. It can be run in bash and over the Web via webmin.
lalaCVSMail is a notification tool which sends mail after a
CVS commit has completed with information relating to the
commit. It accesses the raw CVS file instead of working with
temporary files or secondary CVS operations.
cvs-mailcommit is a tool to distribute CVS commitments via
mail. It is hooked into the CVS system via the loginfo file
and helps people keep track of CVS repositories by
distributing changes in a repository via mail.