Calm SSL certificate monitoring for people who do not want a NOC dashboard.
Otterwatch watches your SSL certificates and emails you well before they expire, so you are never caught off guard by that "oh no, the cert expired" moment. It keeps a quiet eye on whether your sites are responding too, but certificates come first.
Most monitoring tools are built for big operations teams and bury you in dashboards and alarms. Otterwatch does one thing calmly and well, with friendly email reminders instead of a wall of red alerts.
When Let's Encrypt stopped sending certificate expiration emails in June 2025, a lot of sites quietly lost their renewal safety net. Otterwatch is built to be that safety net.
Otis is our park ranger otter. He keeps watch over your sites and sends you a friendly heads up before anything goes wrong.
Free to start. Five monitors, no credit card.