phpList
Description: phpList is an open source newsletter and email marketing software. It allows you to easily create, send, and track email newsletters, announcements, notifications, and more to a list of subscribers.
Type: software
Pricing: Open Source
RackMonkey
Description: RackMonkey is an open-source data center infrastructure management software that allows administrators to monitor racks, servers, networks and power in a data center.
Type: software
Pricing: Free