Small
$9.00 /mo
Pricing lists Small at $9 per month in USD excluding tax.
- Inventory
- 40 inventory certificates
- CT monitors
- 2 CT monitors
Certificate monitoring · Vendor site 2026-10-04
CertObserver monitors TLS certificates across inventories, Certificate Transparency logs, and live endpoints with expiry alerts, team roles, and a free CT search tool. Plans bundle inventory limits, CT monitors, endpoint checks, and Slack or email notifications.
Understand the total cost
Small
$9.00 /mo
Pricing lists Small at $9 per month in USD excluding tax.
Medium
$29.00 /mo
Pricing lists Medium at $29 per month in USD excluding tax.
No retained pricing changes yet. A current price alone does not establish a historical trend.
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.
Not as an ongoing plan. CertObserver offers a free trial. Marketing site offers a 14-day free trial without credit card and a free CT search tool without signup.
CertObserver paid plans start at $9 per month (Small $9/mo, Medium $29/mo). Prices are in USD and last checked Oct 4, 2026.
We could not confirm API access for CertObserver.