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.
Telbee.io - telbee adds voice messaging to podcasts, websites, social media and email to easily hear from and build human relationships with your customers and community - save time, reduce frustration, and gain sales, understanding and fans
UptimeRobot - Free Website Uptime Monitoring
Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.
FreshStatus - Better status pages in 1-click, FREE FOREVER
UserIQ - UserIQ combines user intelligence, customer health, and targeted engagements to help you deliver what each customer needs to be successful.