Fortra BeSTORM vs Rexsser: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
Fortra BeSTORM is a commercial dynamic application security testing tool by Fortra. Rexsser 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. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictShort answer
Enterprise and mid-market security teams with mature CI/CD pipelines will get the most from Fortra BeSTORM because its black box fuzzing approach catches logic flaws and authentication bypasses that static scanners routinely miss during pre-deployment testing. The tool's hybrid deployment model and alignment with NIST ID.RA (risk assessment) means it integrates cleanly into existing risk workflows without forcing rip-and-replace decisions. Skip this if your organization runs heavy manual penetration testing or lacks the engineering bandwidth to tune fuzzing parameters; BeSTORM demands active tuning to avoid noise, and passive buyers end up drowning in low-confidence findings. AppSec teams running Burp Suite who want to accelerate reflected XSS discovery without manual regex writing should evaluate Rexsser. The plugin extracts keywords from HTTP responses and tests them automatically, cutting the time spent on pattern matching during active scanning; at 75 GitHub stars and free pricing, it's low friction to pilot alongside existing Burp workflows. This is not a replacement for a full DAST platform,it's a focused XSS hunter that works within your existing tool, so teams expecting broader vulnerability coverage or supply chain scanning should look elsewhere.
Based on our analysis of core features, company size fit, deployment model, here is our conclusion:
