Anti-Spam SMTP Proxy Server implements multiple spam filters
Multi user address book application accessable through the web.
Encrypting E-Mail Client
Source code for be able to use Relation Tags.
ImpraStorage provided a private imap access to store large files
Webmail open-source in php base on Squiremail
ncurses VCard 3.0 contact management editor
A very simple Email Extractor
Simple interface which can be used as a clipboard manager
Translate CSV containing address information to vcard