Assetnote ASM vs crt.guru: Side-by-Side Comparison (2026)

Assetnote ASM: External attack surface management platform with continuous asset discovery. built by Assetnote. Core capabilities include Hourly automated asset discovery and scanning, Asset enrichment and contextualization, Exploit-based vulnerability verification..

crt.guru: External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports. built by crt.guru. Core capabilities include Multi-region external TLS scanning (Frankfurt, New York, Amsterdam), Certificate expiry alerts at 30, 14, 7, and 1 day intervals, Vulnerability scanning (Heartbleed, ROBOT, CCS Injection, weak ciphers)..

Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

Assetnote ASM differentiates with Hourly automated asset discovery and scanning, Asset enrichment and contextualization, Exploit-based vulnerability verification. crt.guru differentiates with Multi-region external TLS scanning (Frankfurt, New York, Amsterdam), Certificate expiry alerts at 30, 14, 7, and 1 day intervals, Vulnerability scanning (Heartbleed, ROBOT, CCS Injection, weak ciphers).

Assetnote ASM is developed by Assetnote founded in 2018-01-01T00:00:00.000Z. crt.guru is developed by crt.guru. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Assetnote ASM and crt.guru serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Security Scanning. Review the feature comparison above to determine which fits your requirements.