Amass vs Projectdiscovery.io | Chaos: side-by-side comparison (2026)
Amass is a free external attack surface management solution. Projectdiscovery.io | Chaos is a free external attack surface management solution. Features, integrations, deployment and the company behind each one, side by side.
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Amass is an open-source OWASP tool for comprehensive attack surface mapping and asset discovery through domain reconnaissance and subdomain enumeration.
A powerful enumeration tool for discovering assets and subdomains.
Side-by-side comparison
Feature
Amass
Projectdiscovery.io | Chaos
Pricing model
Free
Free
Category
External Attack Surface Management
External Attack Surface Management
Deployment and fit
Deployment type
On-Premises
Cloud
Company size fit
Startup, SMB, Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Open source
GitHub stars
14,260
–
Last commit
Sep 2025
–
Use cases and capabilities
Reconnaissance
Yes
No
Open Source
Yes
No
Network Reconnaissance
Yes
No
Subdomain Enumeration
Yes
Yes
DNS Security
Yes
Yes
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