Otterwatch

Daily SSL certificate expiry monitoring with an uptime check; emails only when something changes.

Otterwatch checks monitored sites once a day for SSL certificate expiry and HTTP reachability, sending plain-text email alerts before certificates expire (at 23, 14, 7, and 1 days, or 30/7/1 on the free plan) or when a site goes down. Includes a free one-off SSL check tool, a single-page dashboard, and magic-link sign-in. Pro adds certificate-transparency issuance monitoring, cert change-detection, hourly checks, and a 25-domain limit.

Category: Monitoring & observability
Pricing: freemium · from $0
Free tier: yes
API: no
MCP server: no
SDK: no
Open source: no

#ssl #certificate-monitoring #uptime #email-alerts #certificate-transparency

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Listed 2026-10-21 · last verified 2026-10-21 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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API

curl https://toolgrep.com/api/products/otterwatch