crt.sh vs Tanium Certificate Manager: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
crt.sh is a free external attack surface management tool. Tanium Certificate Manager is a commercial certificate lifecycle management tool by Tanium. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
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 certificate sprawl across hybrid infrastructure should start here; Tanium Certificate Manager finds and monitors certificates you didn't know existed, which is half the battle most teams lose. The platform covers ID.AM and DE.CM functions meaningfully, giving you actual inventory visibility and continuous anomaly detection rather than point-in-time scanning. Skip this if you need deep certificate orchestration and renewal automation; Tanium excels at discovery and alerting, not at managing the remediation workflow end-to-end.
