Certificate Expiry Monitor vs DigiCert CertCentral: Side-by-Side Comparison (2026)

Certificate Expiry Monitor

DevOps and platform teams running Kubernetes will get immediate value from Certificate Expiry Monitor because it catches certificate expirations before they cause outages, not after; the Prometheus integration means alerts land in the monitoring stack you already have rather than spawning another tool. The Docker-based deployment and native ingress discovery eliminate the manual certificate tracking spreadsheets that miss renewals across distributed environments. Skip this if you need centralized certificate lifecycle management with automated renewal workflows; Certificate Expiry Monitor is a monitor, not a manager, and works best paired with your existing provisioning process.

DigiCert CertCentral

Mid-market and enterprise security teams managing certificate sprawl across multiple departments and geographies should pick DigiCert CertCentral for its automation depth and compliance flexibility, particularly the ACME-native issuance and renewal workflows that eliminate manual touchpoints at scale. Support for 20+ certificate types including code signing, document signing with eIDAS compliance, and S/MIME gives you single-vendor coverage that most alternatives force you to cobble together from multiple vendors, plus European data residency for orgs constrained by data localization rules. Skip this if you're looking for a lightweight, self-service cert management layer; CertCentral's value is in centralized procurement and policy enforcement, not simplicity.