FREEDOM251

Freedom251 › Security & Privacy

Free and open first

Best Application Security Testing in 2026

Application security testing tools help you check software and APIs for security issues. This list is for people comparing ways to assess applications, code and deployed services.

  1. 1

    OWASP ZAP

    Free plan Open source APIExtensionLinux+3

    ZAP combines web scanning with automation, API imports, and CI options at no charge. Check installer requirements and the project's release-support limits before choosing it.

    8.8 Free plan 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.

    7.6 Free plan Visit site
  4. 4

    Endor Labs

    Free plan APIExtensionLinux+4

    Endor Labs brings source, dependency and agent-security capabilities into one platform, with several deployment options.

    7.4 Free plan · pricing on request Visit site
  5. 5

    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.

    7.3 Free plan · paid from $99/mo (annual) · 14-day trial Visit site
  6. 6

    FOSSA

    Free plan APILinuxSelf-hosted+1

    FOSSA combines dependency analysis, policy enforcement, and SBOM workflows, with web and self-hosted deployment options.

    7.3 Free plan · paid from $20/mo (annual) Visit site
  7. 7

    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
  8. 8

    PVS-Studio

    Free plan LinuxMacWindows

    Choose PVS-Studio if your team needs multi-language source analysis, security checks, and integrations with development tools.

    7.0 Pricing on request · 7-day trial Visit site
  9. 9

    w3af

    Free plan APILinuxMac+2

    w3af offers a free, self-hosted-capable scanner with plugin-based assessment, graphical and console interfaces, and API automation.

    6.9 Free plan Visit site
  10. 10

    Acunetix

    Free trial APILinuxSelf-hosted+2

    Choose Acunetix if your organization needs dynamic scanning across web applications and APIs, with evidence to assess findings and integrations for issue tracking.

    6.6 Pricing on request Visit site
  11. 11

    CodeSonar

    Free trial LinuxSelf-hostedWeb+1

    Choose CodeSonar if you need static analysis across source code and binaries, with support for named security coverage, coding standards, and deployment options.

    6.4 Pricing on request Visit site
  12. 12

    Bright Security DAST

    Paid APILinuxMac+3

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

    6.0 Pricing on request Visit site
  13. 13

    Semgrep AppSec Platform

    Free plan Web
    6.0 Free plan · paid from $15/mo Visit site
  14. 14

    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
  15. 15

    DerScanner

    Paid APILinuxSelf-hosted+2

    Choose DerScanner if your team needs application security analysis across several artifact types, with deployment choices and development workflow integrations.

    5.8 Pricing on request Visit site
  16. 16

    Snyk Container

    Free plan Web
    5.7 Free plan · paid from $25/mo Visit site
  17. 17

    Contrast Assess

    Paid APILinuxMac+3

    Assess pairs runtime instrumentation with continuous application and API analysis, plus reporting for development and AppSec workflows.

    5.6 Pricing on request Visit site
  18. 18

    HCL AppScan Source

    Paid LinuxSelf-hostedWindows

    Choose HCL AppScan Source if your security or development team needs source-code SAST with IDE and CI/CD integration, custom language support, and on-premises control.

    5.6 Pricing on request Visit site
  19. 19

    Invicti

    Paid APISelf-hostedWeb

    Choose Invicti if your team needs application and API security testing with risk prioritization, remediation context, and connections to development tools.

    5.5 Pricing on request Visit site
  20. 20

    Mend.io

    Paid Web

    Mend.io covers application security, dependency maintenance, and AI component safeguards, with integrations for development and project tools.

    5.2 Pricing on request Visit site
  21. 21

    Burp Suite Enterprise Edition

    Paid LinuxWebWindows
    4.7 Pricing on request · 30-day trial Visit site
  22. 22

    Klocwork

    Paid LinuxWebWindows

    Choose Klocwork if your team needs source code analysis with pull request scans, IDE and CI/CD integration, custom rules, or automated fixes.

    4.6 Pricing on request Visit site
  23. 23

    Checkmarx One

    Paid Web
    4.5 Pricing on request Visit site
  24. 24

    Rapid7 InsightAppSec

    Paid WebWindows

    InsightAppSec provides a broad listed scanning and reporting set in a hybrid deployment. Review the annual billing requirement and paid-only access against your testing workflow.

    4.5 From $175/mo (annual) Visit site
  25. 25

    OpenText Fortify Software Security Platform

    Paid Web

    Choose OpenText Fortify Software Security Platform when your security program needs IaC and container scanning alongside policy, remediation, SBOM, and compliance functions.

    4.2 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

Compare free plans, free trials and paid entry prices. If reading or changing code matters, check the open-source licence. Also check supported languages, testing methods, CI/CD integrations, deployment choices, SCA and API testing.

Questions

Are free application security testing plans available?

Yes. Items in this category offer free plans, and a free trial is available from other items. Check the limits and terms for the option you choose.

Can I use an open-source application security tool?

Open-source code is offered by items in this category. Check the licence before using, modifying or distributing the code.

Do these tools support API testing?

API testing is a comparison field for this list. Check the individual tool details to confirm whether it supports the API checks you need.

Which deployment platforms are available?

Listed platforms include web, Linux, Windows, API, self-hosted and macOS. Availability varies by tool.

How are prices shown?

Prices may be a free plan, a stated paid starting price, pricing on request, or a trial period. Review the product's pricing note before deciding.

More in Security & Privacy