Anti Spam SMTP Gateway
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
System tray unread mail checker for Linux
Multi user address book application accessable through the web.
Open Source Anti-Spam and Anti-Virus Gateway
Virtual Appliance of RadicalSpam
Italian Certified Electronic eMail
ImpraStorage provided a private imap access to store large files
A MemberAdapter and cronjob to contact an ldap server for mailman