Certificate Expiry Monitor is a free certificate lifecycle management solution. Entrust Certificate Manager is a commercial certificate lifecycle management solution by Entrust. Features, integrations, deployment and the company behind each one, side by side.
A Docker-based utility that monitors TLS certificate expiration dates and exposes the data as Prometheus metrics with support for Kubernetes ingress discovery and configurable domain filtering.
Automates discovery, issuance, renewal, and revocation of digital certificates at scale
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Based on what each listing shows: deployment, company size, price and open source.
Certificate Expiry Monitor fits if you need to run it on your own servers, you are a small business, you need a free product and you want an open-source product.
Entrust Certificate Manager fits if you need both cloud and on-premises options.
Common questions when comparing Certificate Expiry Monitor vs Entrust Certificate Manager for certificate lifecycle management.
Certificate Expiry Monitor: A Docker-based utility that monitors TLS certificate expiration dates and exposes the data as Prometheus metrics with support for Kubernetes ingress discovery and configurable domain filtering.
Entrust Certificate Manager: Automates discovery, issuance, renewal, and revocation of digital certificates at scale, built by Entrust.
The table above shows where their features, integrations, deployment and company size fit differ.
Certificate Expiry Monitor is open-source with 168 GitHub stars. Entrust Certificate Manager is made by Entrust. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Certificate Expiry Monitor and Entrust Certificate Manager are both Certificate Lifecycle Management products, and both cover SSL, TLS. Key differences: Certificate Expiry Monitor is Free while Entrust Certificate Manager is Commercial, Certificate Expiry Monitor is open-source. Use the table above to see where features, deployment and company size fit differ.
No Certificate Lifecycle Management shortlist yet. This is the closest one.
Updated 2026-11-01
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