Acunetix Web Application & API Security vs Arachni: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Acunetix Web Application & API Security is a commercial dynamic application security testing tool by Acunetix. Arachni is a free dynamic application security testing tool. Compare features, ratings, integrations, and community reviews side by side to find the best dynamic application security testing fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Acunetix Web Application & API Security
Mid-market and enterprise teams scanning high-volume web applications and APIs will get the fastest time-to-remediation from Acunetix Web Application & API Security because its proof-of-exploit feature eliminates the false positive triage work that burns through security resources. The blended DAST/IAST approach detects over 12,000 vulnerability types including zero-days, and scheduled continuous scanning catches drift in multi-environment deployments. Skip this if your main gap is secure code review or SAST; Acunetix prioritizes detection over identifying vulnerable code lines early in the pipeline, so developers won't get line-level guidance before deployment.
Security teams evaluating open-source DAST tools for regression testing in CI/CD pipelines will find Arachni's low operational overhead and zero licensing friction valuable, especially when scanning your own applications repeatedly. The framework's modular architecture and scripting capabilities let you customize checks for legacy systems that commercial scanners often ignore. Skip this if you need managed scanning, compliance reporting templates, or a vendor to call when false positives spike; Arachni requires in-house expertise to tune effectively and produces raw vulnerability data you'll need to contextualize yourself.
