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

SpeakPipe - SpeakPipe is a tool enabling organizations to receive voice messages from the audience directly on the website.

UptimeRobot - Free Website Uptime Monitoring

UserIQ - UserIQ combines user intelligence, customer health, and targeted engagements to help you deliver what each customer needs to be successful.

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.

ES Engage - Exchange Solutions delivers Loyalty and Customer Engagement Solutions for Retailers through Smarter Loyalty Programs, Individualized Offers, and Website Optimization, powered by Advanced Analytics.