UptimeRobot - Free Website Uptime Monitoring
Freshstatus by Freshworks - Better statuspage, in 1-click, FREE forever 🔥
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.
StatusPage Generator - Host your status page on GitHub
Status.io - Status.io is a platform for system status pages and status notifications. Companies rely on Status.io to track outages, schedule planned maintenances, broadcast status notifications, and much more; and their customers love the transparency.
status-checks - Create GitHub status checks using JavaScript Functions