Tricount - Manage and share expenses with friends
Unimus - Unimus is a Network Automation and Configuration management (NCM) solution designed for fast deployment network-wide and ease of use. Unimus does not require learning any abstraction or templating languages, and does not require any coding skills.
Kittysplit - The easiest way of sharing costs with a group of friends
Oxidized - configuration backup software (IOS, JunOS) - silly attempt at rancid
ihatemoney - Manage your shared expenses, easily
RANCID - RANCID - Really Awesome New Cisco confIg Differ.