statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

YUNO - YUNO is a web data driven company focussed on solving customer challenges in web data discovery and extraction space.

LiveAgent - LiveAgent is a fully-featured web-based live chat and help desk software. It harnesses the power of a universal inbox, real-time live chat, built-in call center, and a robust customer service portal. Start your free 1 month trial today!

FreshStatus - Better status pages in 1-click, FREE FOREVER

UserEcho - UserEcho gives you the opportunity to create a modern Community to support customers in a few minutes. It includes support forum with the possibility of voting for ideas, Helpdesk, Knowledge Base and Online Chat.