Cachet - Cachet is a free, open source status page for your API, service or company. Built with all of the features that you'd expect from a status page.
LambStatus - Serverless status page system which enables you to build a status page with minimum effort and cost!
cState - 🔥 Free & open source under MIT!
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.
Fyipe - Status page, monitoring and on-call made simple.
StatusHub - StatusHub is an IT Incident & Disruption Communication tool that helps you keep your customers and team informed during service downtime. StatusHub makes it easy to keep everyone informed through status pages and multiple notification channels.