crt.sh vs DigiCert Private CA: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
crt.sh is a free external attack surface management tool. DigiCert Private CA is a commercial certificate lifecycle management tool by DigiCert. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictShort answer
Security teams doing threat intelligence or domain monitoring should use crt.sh as a free, fast way to spot certificate issuance anomalies that signal domain takeover or phishing campaigns before they scale. Certificate Transparency logs index roughly 15 billion certificates, giving you real-time visibility into what's been legitimately issued against your domains and competitors' infrastructure. Skip this if you need automated alerting or integration into your SIEM; crt.sh is a lookup tool, not a monitoring platform, and catching malicious certificates requires manual checks or custom scripting. Mid-market and enterprise teams replacing aging on-premises certificate authorities should pick DigiCert Private CA for its genuine ADCS modernization path without forcing a full cloud migration. The platform supports hybrid deployments with FIPS 140-2 Level 3 hardware backing and spans identity management through infrastructure resilience (NIST PR.AA, PR.PS, PR.IR), meaning you get security depth across provisioning, issuance, and access control in one system. Skip this if you're purely cloud-native and want minimal operational overhead; DigiCert's hybrid strength is also its complexity tax.
