HelpScout - Help Scout is a simple, straightforward way to provide excellent support

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

HelpNinja - Simple & Affordable help desk

UptimeRobot - Free Website Uptime Monitoring

SupportYourApp - Connecting talented people with the blooming IT industry to help them grow faster by outsourcing support.

StatusPage.io - StatusPage.io is the best way for web infrastructure, developer API, and SaaS companies to get set up with their very own status page in minutes. Integrate public metrics and allow your customers to subscribe to be updated automatically.