FREEDOM251

Freedom251 › IT & Infrastructure

Free and open first

Best Attack Surface Management Software in 2026

Security teams assessing exposed assets can compare attack surface management tools by what they discover and how often they revisit changes. Qualys External Attack Surface Management, runZero and FullHunt are among the entries. External asset discovery and cloud asset discovery help distinguish the sources covered; attack-path analysis adds a way to consider relationships between exposures. Monitoring frequency, asset limit and API access are further operational factors to review. Free plan availability and Paid from provide cost context. Consider which asset sources and monitoring cadence matter for your environment, and whether the listed access and analysis features align with your security workflow.

  1. 1

    AttackIQ Platform

    Free plan APILinuxMac+3

    Choose AttackIQ if your organization needs adversary emulation, control validation, or enterprise-wide security testing.

    7.7 Pricing on request Visit site
  2. 2

    CTM360

    Free plan AndroidAPIiPhone+1

    CTM360 combines attack-surface monitoring, digital risk protection, threat intelligence, and third-party assessments.

    7.4 Free plan · paid from $5,000/yr Visit site
  3. 3

    ImmuniWeb

    Free plan AndroidAPIiPhone+1

    ImmuniWeb brings scanning, monitoring, and penetration testing into one platform, with a free set of Community Edition tests.

    7.2 Free plan · paid from €395 Visit site
  4. 4

    Detectify Surface Monitoring

    Free plan APIWeb

    Detectify Surface Monitoring combines continuous asset discovery with broad vulnerability checks, configurable rules, and integrations.

    7.1 From €90/mo · 14-day trial Visit site
  5. 5

    OWASP Amass

    Free plan LinuxMacSelf-hosted+1

    OWASP Amass brings asset discovery and long-term tracking together in a self-hosted framework, with multiple installation routes and broad reconnaissance sources.

    7.1 Free plan Visit site
  6. 6

    FullHunt

    Free plan APIWeb

    FullHunt combines external asset discovery with monitoring and vulnerability intelligence, and offers API access for security products and teams.

    7.0 Free plan · paid from $149/mo · 14-day trial Visit site
  7. 7

    runZero

    Free plan APILinuxMac+3

    runZero brings multiple discovery methods and asset types into one evolving inventory, with reporting, alerts, and integrations.

    7.0 Free plan · paid from $5,000 · 21-day trial Visit site
  8. 8

    SOCRadar Extended Threat Intelligence Platform

    Free plan APIWeb

    SOCRadar XTI combines several security-monitoring areas with threat intelligence and workflow tools.

    6.7 Free plan · 7-day trial Visit site
  9. 9

    CrowdStrike Falcon Surface

    Free trial LinuxMacWeb+1

    Choose Falcon Surface if your organization needs continuous exposure discovery across multiple asset types and wants findings connected to response workflows.

    6.4 Pricing on request · 15-day trial Visit site
  10. 10

    Aftra

    Free trial Web

    Aftra combines asset discovery, continuous monitoring, prioritization, and reporting for organizational security teams.

    6.2 From €490/mo (annual) Visit site
  11. 11
    6.1 Free plan · paid from $0.03 · 90-day trial Visit site
  12. 12
    6.1 From $3/user/mo (annual) · 30-day trial Visit site
  13. 13

    Armis Centrix for Attack Surface Management

    Paid APISelf-hostedWeb

    Choose Armis Centrix if your team needs asset discovery across IT, OT, IoT, and IoMT, with risk prioritization and integration-driven response.

    5.9 Pricing on request Visit site
  14. 14

    Check Point External Risk Management

    Paid APIExtensionLinux+3

    Check Point External Risk Management combines external asset discovery, risk prioritization, and remediation guidance with optional expert services.

    5.9 Pricing on request Visit site
  15. 15

    Cisco Catalyst Center

    Paid APILinuxMac+3
    5.9 Pricing on request Visit site
  16. 16

    Group-IB Attack Surface Management

    Free trial APIWeb

    Group-IB Attack Surface Management combines external asset discovery, continuous monitoring, and threat intelligence with issue workflows.

    5.9 Pricing on request Visit site
  17. 17

    Rapid7 Surface Command

    Free trial APILinuxMac+2

    Choose Rapid7 Surface Command if your security team needs asset visibility, exposure context, and tracked remediation in one product.

    5.9 From $1.62/mo Visit site
  18. 18

    CyCognito Platform

    Paid AndroidAPIiPhone+1

    CyCognito Platform combines external footprint discovery with security testing and prioritized findings.

    5.8 Pricing on request Visit site
  19. 19

    Halo Security

    Free trial APIWeb

    Halo Security combines asset discovery, agentless scanning and risk prioritization for internet-facing environments.

    5.8 From $399/mo Visit site
  20. 20

    Qualys External Attack Surface Management

    Free trial APILinuxWeb

    Qualys EASM combines asset discovery, ownership mapping, change detection and risk prioritization for external infrastructure.

    5.8 Free plan · pricing on request Visit site
  21. 21

    Bitsight External Attack Surface Management

    Paid APIWeb

    Bitsight combines external asset discovery, continuous monitoring, and vulnerability prioritization with vendor coverage and reporting.

    5.7 Pricing on request Visit site
  22. 22

    Bugcrowd External Attack Surface Management

    Paid Web

    Choose Savant Vista if your priority is ongoing visibility into public-facing assets and a workflow for prioritizing and validating exposures.

    5.5 Pricing on request Visit site
  23. 23

    Censys Attack Surface Management

    Paid Web

    Censys ASM combines broad internet mapping, continuous change monitoring and risk prioritization for external exposure management. Pricing is quote-based and uses Assets Under Management.

    5.5 Pricing on request Visit site
  24. 24

    EASMLens

    Paid Web

    Consider EASMLens if your organization needs agentless discovery and monitoring of internet-facing assets, with business-impact prioritization and listed integrations.

    5.3 Pricing on request Visit site
  25. 25

    Tenable One Attack Surface Management

    Paid LinuxMacWeb+1

    Tenable One Attack Surface Management centers on external asset discovery, ongoing monitoring, and risk assessment.

    5.3 From $4,790/yr Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

More in IT & Infrastructure