SSL monitoring that
doesn't make you buy an
entire observability stack.
Add your domains. We probe the live TLS certificate, watch Certificate Transparency logs, and alert you on email, Slack & webhooks 30 / 14 / 7 / 1 days before expiry. Certs are getting shorter (90 → 47 days). Stop renewing from memory.
Every certificate, counting down.
Dive deeper: how the live probe + CT works · why shorter certs are a problem
Single-purpose. SSL monitoring is the whole job.
LIVE TLS PROBE
We open a real handshake on :443 and read the served X.509 — issuer, SAN, chain, negotiated TLS version. Not just what CT logs say was issued. See the probe architecture.
CT MONITORING — SHIPPED
Get alerted the moment a new certificate is issued for your domain via Certificate Transparency. Delivered today, not 'Coming Soon'.
4 ALERT CHANNELS
Email, Slack and signed webhooks. Thresholds at 30 / 14 / 7 / 1 days. Idempotent — no double-paging. Learn more.
PRIVATE & INTERNAL CERTS
Monitor self-signed and internal PKI certificates behind a tunnel. Built for sysadmins, not just public sites.
GENEROUS FREE TIER
5 certificates free, forever. Email alerts and one Slack integration included. Most generous in the category. See pricing.
API + WEBHOOKS @ ENTRY
REST API and signed webhooks from the $15/mo Starter tier. Wire SSL state into your own runbooks and IaC. Full architecture.
Priced for one job, not a platform.
Webhooks ship at the entry tier. Certificate Transparency monitoring is delivered, not "Coming Soon". Free tier is the most generous on the market. See why we can deliver this (architecture).
- ✓Continuous monitoring
- ✓Email alerts 30/14/7/1
- ✓Slack (1 integration)
- ✓Change/renewal detection
- ✓1 user
- ✓Everything in Starter
- ✓Private / internal certs
- ✓CT monitoring (shipped)
- ✓RBAC · 3 users
Curious how a small focused team delivers this? Read the architecture and our story in France.
| PRODUCT | ENTRY PRICE | FREE CERTS | WEBHOOKS | CT MONITORING | NO-LOGIN CHECKER |
|---|---|---|---|---|---|
| CertFleet | $15/mo | 5 | ✓ included | ✓ shipped | ✓ yes |
| TrackSSL.com | $19/mo | 2 | ✗ ($39 tier) | ✗ Coming Soon | ✗ none |
| UptimeRobot | $8/mo | — | ✗ | ✗ | ✗ |
| Datadog | usage | — | platform | partial | ✗ |
I built CertFleet for my own infrastructure needs because market tools were too expensive and complex. Now available for everyone.
Never get paged for an expired cert again.
Run a free instant check, or spin up continuous monitoring on 5 certs in under a minute. No credit card.