Aleph Search Clear is a commercial external attack surface management tool by Aleph Networks. crt.sh is a free external attack surface management tool. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Mid-market and enterprise security teams managing third-party and supply chain risk need Aleph Search Clear because it finds exposure across both surface and deep web in a single query, then automates the monitoring that actually catches when your vendors get compromised. The tool covers five NIST CSF 2.0 functions from asset discovery through adverse event analysis, and its KYC/KYS alignment with DORA and NIS 2 saves compliance teams weeks of manual mapping work. Skip this if your organization only needs traditional OSINT for incident response; Aleph is built for continuous ecosystem risk oversight, not one-off research.
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.
OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.
Bash script for subdomain enumeration via crt.sh certificate transparency logs.
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Common questions about comparing Aleph Search Clear vs crt.sh for your external attack surface management needs.
Aleph Search Clear: OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web. built by Aleph Networks. Core capabilities include Clear Web and Deep Web search and analysis, AI-powered source discovery and infosphere enrichment, Cyber exposure surface mapping and monitoring (EASM)..
crt.sh: Bash script for subdomain enumeration via crt.sh certificate transparency logs. Core capabilities include Subdomain enumeration via certificate transparency logs, Automated querying of crt.sh website, Parsing and filtering of crt.sh output..
Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.
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