Small
$9.00 /mo
Pricing lists Small at $9 per month in USD excluding tax.
- Inventory
- 40 inventory certificates
- CT monitors
- 2 CT monitors
CertObserver
● Identity checkedCertificate 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.
- Category
- Certificate monitoring
- Free access
- Marketing site offers a 14-day free trial without credit card and a free CT search tool without signup.
- API access
- Not confirmed
Is CertObserver right for you?
A good fit for
Teams managing many hostnames who need CT discovery, expiry warnings, and handshake validation in one service.
Before you choose
Small plan caps 40 inventory certificates and two CT monitors; higher tiers raise limits on the pricing page.
TLS inventory and alerts
CertObserver combines CT monitoring, endpoint handshakes, and inventory tracking so operators catch unexpected or expiring certificates early.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| CT search | Homepage promotes a free CT search for unexpired certificates without signup. | Facts sourced | 2026-10-04 |
| Small plan price | Pricing page lists Small at $9/month with defined inventory and monitor quotas. | Facts sourced | 2026-10-04 |
Understand the total cost
CertObserver pricing & plans
Medium
$29.00 /mo
Pricing lists Medium at $29 per month in USD excluding tax.
- Inventory
- 200 inventory certificates
- Endpoint monitors
- 100 endpoint monitors
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Frequently asked questions
What is CertObserver used for?
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.
Does CertObserver have a free plan?
Marketing site offers a 14-day free trial without credit card and a free CT search tool without signup.. This record does not confirm an ongoing free plan.
How much does CertObserver cost?
The listed monthly price is $9.00 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use CertObserver through an API?
Not confirmed. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Small plan caps 40 inventory certificates and two CT monitors; higher tiers raise limits on the pricing page.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.