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crawley is a free external attack surface management tool. Palo Alto Networks Cortex Xpanse is a commercial external attack surface management tool by Palo Alto Networks. 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, company size fit, deployment model, here is our conclusion:
Security teams building custom reconnaissance workflows or integrating web discovery into existing automation pipelines should start with Crawley; it's free, written in Go for speed, and handles multiple protocols and authentication methods that most off-the-shelf crawlers require workarounds to support. The 308 GitHub stars reflect active maintenance and real-world use rather than enterprise polish. Skip this if you need a GUI, managed hosting, or out-of-the-box reporting; Crawley is deliberately a building block, not a finished product.
Palo Alto Networks Cortex Xpanse
Mid-market and enterprise security teams drowning in unmanaged assets will find Cortex Xpanse's value in its continuous internet-wide scanning of 500 billion ports daily, which surfaces shadow infrastructure and unknown cloud accounts that traditional inventory tools miss. The platform's strength in asset discovery and attribution maps directly to NIST ID.AM compliance, a gap most organizations fail to close. Skip this if you need post-breach forensics or threat hunting; Xpanse is attack surface management, not incident response, and assumes you have remediation workflows ready to act on what it finds.
A Go-based web crawler that supports multiple protocols and authentication methods for systematic web resource discovery and collection.
Active attack surface mgmt solution for discovering & remediating unknown risks
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Common questions about comparing crawley vs Palo Alto Networks Cortex Xpanse for your external attack surface management needs.
crawley: A Go-based web crawler that supports multiple protocols and authentication methods for systematic web resource discovery and collection..
Palo Alto Networks Cortex Xpanse: Active attack surface mgmt solution for discovering & remediating unknown risks. built by Palo Alto Networks. headquartered in United States. Core capabilities include Continuous internet-wide scanning of 500B+ ports daily, Automated discovery of unknown and unmanaged assets, Supervised machine learning for attack surface mapping..
Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.
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