Management of table tennis umpires, referees, and their assigments.
Booking/reservation of meeting rooms/equipment with e-mail invitations
software for email automation (newsletters, transaction mails, etc.)
Jnestor is another majordomo in java
An unofficial web console to administer Apache James 3 server
Drosera is open-source orienteering management server.
(주)앤드와이즈의 썬더메일5.0 automail 라이브러리
A email newsletter system