Certificate Expiry Monitor is a free certificate lifecycle management solution. TrustFour T4 Control Plane is a commercial certificate lifecycle management solution by TrustFour. 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.
TLS compliance monitoring and management platform aligned to NIST 800-52R2.
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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.
TrustFour T4 Control Plane fits if you want a cloud product.
Common questions when comparing Certificate Expiry Monitor vs TrustFour T4 Control Plane 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.
TrustFour T4 Control Plane: TLS compliance monitoring and management platform aligned to NIST 800-52R2, built by TrustFour.
The table above shows where their features, integrations, deployment and company size fit differ.
Certificate Expiry Monitor is open-source with 168 GitHub stars. TrustFour T4 Control Plane is made by TrustFour. 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 TrustFour T4 Control Plane are both Certificate Lifecycle Management products, and both cover TLS, SSL, Alerting. Key differences: Certificate Expiry Monitor is Free while TrustFour T4 Control Plane 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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