SilverTunnel-NG is a Java library that handles all the Tor connection work for easy integration into new or existing projects. You can connect to any server on the Internet anonymously; connect to a hidden service inside the Tor network; provide a hidden service; and more.
Ingo is an email-filter management application. It
is fully internationalized, integrated with Horde
and the IMP Webmail client, and supports both
server-side (Sieve, procmail, maildrop) and client-side
(IMAP) rule creation.
Turba is the Horde contact management application. It is a production level address book, and makes heavy use of the Horde framework to provide integration with IMP and other Horde applications. It supports SQL, LDAP, Kolab, and IMSP address books.