crt.sh vs DigiCert Trust Lifecycle Manager: 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 Trust Lifecycle Manager 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 security teams drowning in untracked certificates across hybrid infrastructure should pick DigiCert Trust Lifecycle Manager for its CA-agnostic discovery that actually finds internal PKI, not just public certs. The platform maps to NIST PR.AA and PR.DS because it enforces governance at scale without requiring agents everywhere, thanks to agentless scanning across Active Directory forests and cloud environments. Skip this if you're a small team with fewer than 50 certificate touchpoints or need a tightly integrated secrets management solution; DigiCert assumes you're already managing PKI complexity and just need visibility and automation on top of it.
