Hamster-Utilities from Thomas G. Liesner
KorrNews - change outgoing news/mails or incoming mails
Technical corrections incl. MIME-header, random sigs, actions for special groups, subject-optimization,
footnotes, boxquotes, ...
(Last change 02/19/2003)
There are some other tools (CopyIf, CopyUps, Mixgroup), but because the version are only
in german, you have to search on the german page for them.