Phare

Phare is an Estonian uptime monitoring platform for websites, APIs, servers and SSL certificates with built-in incident management and status pages. Checks run as often as every 30 seconds from 12 regions across Europe, the Americas, Asia and Oceania, supporting HTTP(S) and TCP with custom headers, user agents and assertions. SSL certificates are tracked for expiry and misconfiguration. A free plan suits hobbyists and indie hackers; paid plans start from 5 EUR/month and scale by monthly events.