cert-manager vs GeoTrust

cert-manager is a free, open-source tool for obtaining and managing X.509 certificates on Kubernetes and OpenShift. It requests certificates from public or private issuers, keeps them valid, and attempts renewal before expiration. The project automates TLS certificate issuance for Kubernetes Ingress and supports private-PKI certificates for pod-to-pod mutual TLS. Documented authority options include Let’s Encrypt, HashiCorp Vault, CyberArk Certificate Manager, and private PKI. Installation can use kubectl-applied manifests, Helm, Flux, or Argo CD. Related projects include istio-csr, approver-policy, Kubernetes CSI drivers, csi-driver-spiffe, and trust-manager; trust-manager distributes X.509 trust bundles and can run independently. cert-manager publishes threat-model and hardening guidance covering secrets, RBAC, networking, and Kubernetes configuration. Its default Helm values prioritize installation ease and backward compatibility over hardened production security. The project has no LTS releases, though each release is supported until the second subsequent version.

GeoTrust Horizon is a security platform for SSL certificates, certificate automation and monitoring, and vulnerability management. GeoTrust says it is intended for small and medium businesses and fast-moving builders. It offers DV, OV, and EV certificates issued from DigiCert trusted roots. AutoInstall SSL automates certificate installation, re-issuance, and renewal, supporting Apache, NGINX, IIS, LiteSpeed, cPanel, Kubernetes, Docker, and more. With automatic renewal enabled, certificates renew 28 days before expiry. SSL Monitor checks domains and subdomains daily for certificate expiry, trust issues, HTTPS vulnerabilities, and more than 110 SSL issues. Vulnerability Manager scans servers daily for more than 375,000 vulnerabilities and provides remediation instructions; scans can be internal with an installed agent or external without one. GeoTrust says the tool uses Qualys vulnerability detection technology. SSL Monitor costs $2 a month per standard domain, and Vulnerability Manager costs $12 a month per server. Technical chat support is available 24/7; email support uses tickets and phone support is available five days a week.