📜 Certwatch
SSL certificate and domain expiry monitoring you own forever.
Certwatch at a glance
| Price | $24, once — no renewal |
| Replaces | SSLMate-style SSL monitors at $10–20/mo — roughly $180 a year, every year |
| Type | Self-hosted web app |
| Platforms | Your own server (VPS / Docker), any browser |
| Category | Developer Tools |
Certwatch features
🚦 Traffic-light dashboard
Green over 30 days, yellow at 30 or under, red under 7 days, or for expired, invalid or unreachable hosts.
🤝 Real TLS handshake checks
Node tls checks expiry, issuer, SAN list, chain validity, self-signed certs and weak keys (RSA under 2048, EC under 224).
🌐 Domain WHOIS expiry
Best-effort registry lookups so the domain registration itself does not lapse either.
🔔 Threshold alerts
Configurable days (default 30, 14, 7, 1) via webhook and SMTP email, with exactly one alert per threshold per certificate.
⛓️ Chain viewer
See the full presented certificate chain per check in the UI.
📜 Check history
Every check is stored, and unreachable hosts are recorded with the error.
$24 once — that's the whole pricing page
SSLMate-style SSL monitors charges $10–20/mo — roughly $180 a year, every year. Certwatch is a single payment, and it keeps working whether or not we ever sell another copy.
Or get Certwatch inside the full suite — every app in the catalog, currently $97 for the bundle. See the bundle →
Certwatch guides & pages
Honest answers
Is it really free on GitHub?
Yes. Certwatch is MIT-licensed at github.com/bensblueprints/ssl-cert-monitor-mvp and always will be. The $24 buys the packaged 1-click installer; building from source is free.
Where does my monitoring data live?
In a SQLite database on your own server. The checker connects directly to your hosts, so run it from a box that can reach them, and nothing goes to any third-party API.
How reliable is the domain-expiry check?
Certificate checks are the reliable signal. WHOIS domain expiry is best-effort: some TLDs publish no expiry and some rate-limit, so treat it as a bonus rather than the primary alarm.