Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.

Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!

SpamAssassin - Use this program to "Unspam" your mailbox(es).

/Tab - The simple way to split a bill among friends.

Rspamd - Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules...

Dinngo - Splitting payments the fun and easy way