FREEDOM251

Freedom251 › Developer Tools

Free and open first

Best API Security Testing Software in 2026

Choosing API security testing software starts with the risks and formats you need to examine. Compare API discovery and API formats with coverage for authentication, authorization, business logic, and input validation. Deployment options, free-plan availability, and paid-from pricing are also listed, helping you weigh access and fit alongside testing scope. 42Crunch API Security Platform, APISec Platform, and Pynt are among the entries; Schemathesis and VulnAPI are also shown. Consider which testing areas and deployment approach align with the APIs you need to assess.

  1. 1

    WuppieFuzz

    Free plan Open source APILinuxMac+2

    WuppieFuzz offers several testing modes and coverage features for OpenAPI-described REST APIs, with self-hosted deployment.

    8.5 Open source Visit site
  2. 2

    42Crunch API Security Platform

    Free plan APIExtensionLinux+4

    42Crunch combines API testing and runtime controls with discovery and contract governance for MCP servers. Its listed GraphQL limitations in CI/CD are worth checking if those workflows are required.

    7.7 From $9/user/mo Visit site
  3. 3

    Akto API Security Platform

    Free plan APILinuxSelf-hosted+1

    Choose Akto if your team needs API inventory, dynamic security testing, and runtime monitoring across a public cloud or on-premise deployment.

    7.7 Free plan Visit site
  4. 4

    APISec Platform

    Free plan APIExtensionLinux+2

    APISec Platform combines application discovery and runtime testing with detailed evidence for validated exploits.

    7.6 Free plan · paid from $690/mo Visit site
  5. 5

    AquilaX API Security Scanner

    Free plan APIExtensionSelf-hosted+1

    AquilaX combines specification analysis with runtime probing and supports a broad range of API inputs.

    7.6 Free plan · paid from $19/mo · 14-day trial Visit site
  6. 6

    ApyGuard API Security Scanner

    Free plan ExtensionSelf-hostedWeb

    ApyGuard combines API discovery, authenticated testing, and release workflow support. The trial is limited to one lifetime scan, while Basic pricing starts at $129 a month.

    7.5 From $129/mo · 7-day trial Visit site
  7. 7

    Levo.ai

    Free plan APIExtensionLinux+4

    Levo.ai combines API discovery and testing with runtime controls for API and AI traffic.

    7.3 Free plan · pricing on request Visit site
  8. 8

    Automatic API Attack Tool

    Free plan LinuxWindows

    Automatic API Attack Tool offers specification-driven fuzzing with configurable request generation and reporting.

    7.2 Open source Visit site
  9. 9

    Beagle Security

    Free plan APIWeb

    Beagle Security combines automated testing with integrations, multiple report formats, and compliance-mapped reports. Compare the plan test limits and annual billing when choosing a tier.

    7.2 Free plan · paid from $99/mo (annual) · 14-day trial Visit site
  10. 10

    Pentest-Tools.com API Scanner

    Free plan APILinuxMac+1

    The scanner covers common API formats and authenticated scans, with evidence and remediation guidance in reports.

    7.2 Free plan · paid from $140/mo · 7-day trial Visit site
  11. 11

    GraphQL-Cop

    Free plan LinuxMacSelf-hosted+1

    Choose GraphQL-Cop for lightweight GraphQL security checks that can run in CI/CD and produce reproducible findings.

    7.1 Free plan Visit site
  12. 12

    Pynt

    Free plan APILinuxSelf-hosted+1

    Pynt offers API security testing with contextual attack simulation and workflow integrations.

    7.1 Free plan Visit site
  13. 13

    Schemathesis

    Free plan LinuxMacSelf-hosted+1

    Schemathesis provides schema-based API testing with adaptive and stateful workflows, authentication options, and CI/CD integrations.

    7.0 Free plan Visit site
  14. 14

    VulnAPI

    Free plan LinuxMacSelf-hosted+1

    VulnAPI brings API security scanning, detailed findings, and remediation guidance to a free, self-hosted tool.

    7.0 Open source Visit site
  15. 15

    Operator

    Free plan Web

    Operator combines documented-operation testing with detailed proof and remediation guidance. Its scope limit and quoted pricing are important to consider when assessing fit.

    6.9 Free plan Visit site
  16. 16

    Pentestas API Scanner

    Free plan APIWeb

    Pentestas combines live API checks with specification and JWT analysis, and offers several report formats.

    6.9 Free plan · paid from $99/mo · 14-day trial Visit site
  17. 17

    PurpleTeam

    Free plan APISelf-hosted

    Choose PurpleTeam if you need language-agnostic dynamic testing for web applications and APIs, with pipeline execution and guidance for addressing findings.

    6.8 Free plan · paid from $85/mo (annual) · 14-day trial Visit site
  18. 18

    ZeroThreat

    Free plan APIWeb

    ZeroThreat combines web and API testing with exploit validation and listed integrations for development workflows. Review the Free plan’s credit and target limits, or compare its paid scan options.

    6.6 Free plan · paid from $25 Visit site
  19. 19

    Parasoft SOAtest

    Free trial AndroidAPIiPhone+4

    SOAtest brings API and microservices testing, test maintenance, and CI/CD integrations into one product. Prospective users can request tailored pricing or take a 14-day guided trial.

    6.1 Pricing on request Visit site
  20. 20

    Bright Security DAST

    Paid APILinuxMac+3

    Bright DAST combines vulnerability scanning with CI/CD and CLI controls, including a Repeater option for local targets.

    5.9 Pricing on request Visit site
  21. 21

    StackHawk HawkScan

    Free trial APILinuxMac+3

    HawkScan combines dynamic scanning, coding-agent assistance, and broad CI/CD integrations for web and API security work. Review scan quotas, deployment needs, and plan pricing before selecting it.

    5.9 From $5/mo Visit site
  22. 22

    Indusface WAS

    Free trial Web

    Indusface WAS combines automated scanning with optional manual penetration testing and remediation guidance. Advance has a 14-day trial, while higher-tier pricing is custom.

    5.8 From $99/mo · 14-day trial Visit site
  23. 23

    RESTler

    Free plan LinuxMacWindows
    5.8 Free plan Visit site
  24. 24

    Equixly

    Paid APIWeb

    Equixly focuses on continuous API and application risk discovery, validation, and retesting. Its listed pricing includes a €4,999 one-time penetration test, while the platform requires a custom quote.

    5.6 From €4,999 Visit site
  25. 25

    Escape

    Paid APIWeb

    Choose Escape if your security team needs ongoing application testing, attack surface management, and workflows that connect with engineering tools.

    5.5 Pricing on request 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 Developer Tools