OWASP Amass is an open-source network mapping and attack surface discovery tool. It helps security professionals perform network mapping of attack surfaces...
Best Tenable Attack Surface Management Alternatives ranked by AI · updated Aug 2026
Tenable Attack Surface Management discovers and evaluates an organization's external-facing assets for security exposure. It is designed for security and vulnerability teams that want external asset inventory connected to Tenable's risk management platform.
Developer: Tenable
Price: Custom enterprise pricing
🎯 tenable.com/products/attack-surface-management
Top 6 Tenable Attack Surface Management alternatives
Reposify is an external attack surface management platform for security teams that discovers and monitors internet-facing digital assets. It focuses on identifying...
Pros
- Discovers internet-facing assets beyond manually maintained inventories
- Designed for continuous external exposure monitoring
- Helps identify shadow IT and unknown infrastructure
Cons
- Enterprise-focused pricing and procurement
- Less suitable for internal network vulnerability management
- Public product and pricing information is limited
Cortex Xpanse is an external attack surface management platform that continuously discovers internet-exposed assets and services. It is built for enterprise security...
Pros
- Broad automated discovery of exposed infrastructure and services
- Strong remediation workflows within the Palo Alto Networks ecosystem
- Enterprise-scale monitoring and risk prioritization
Cons
- Typically substantially more expensive than free or lightweight ASM tools
- Best suited to organizations already invested in Palo Alto Networks
- Can involve more platform complexity than Chariot
Custom pricing
Microsoft Defender External Attack Surface Management maps an organization's internet-facing assets and highlights exposures for security teams. It is aimed at enterprises...
Pros
- Strong integration with Microsoft Defender, Sentinel, and Azure workflows
- Enterprise-grade asset discovery, exposure tracking, and reporting
- Useful for organizations with existing Microsoft security investments
Cons
- More expensive and complex than Chariot for smaller teams
- Best value often requires broader Microsoft licensing
- Can be less flexible for teams outside the Microsoft ecosystem
Custom pricing
5
Censys Attack Surface Management uses internet intelligence to identify an organization's public-facing infrastructure, certificates, domains, and services. It suits security teams that...
Pros
- Excellent internet-scale visibility into hosts, certificates, and services
- Strong asset attribution and discovery of unknown infrastructure
- Useful for security research and third-party exposure analysis
Cons
- Commercial pricing can be difficult for small organizations
- External visibility does not replace internal asset inventory
- May require analyst validation for ownership and business context
Custom pricing
6
Surface Command
Rapid7
Surface Command is Rapid7's external attack surface management capability for discovering and monitoring internet-facing assets. It helps security teams connect external exposure...
Pros
- Integrates with Rapid7's vulnerability and detection products
- Supports continuous inventory of internet-facing assets
- Useful for teams that want exposure and vulnerability context together
Cons
- Best fit depends on an existing Rapid7 deployment
- Enterprise licensing can be difficult for smaller organizations
- Less suitable if only basic asset enumeration is required
Custom enterprise pricing
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