extended-xss-search is a free security scanning tool. Intruder XSS Scanner is a commercial security scanning tool by Intruder. Compare features, ratings, integrations, and community reviews side by side to find the best security scanning fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Security teams doing bulk URL reconnaissance or rapid XSS triage will appreciate extended-xss-search because it tests multiple XSS payloads per URL instead of stopping at the first match, catching bypasses that simpler finders miss. It's free and sits on 187 GitHub stars, meaning you can deploy it in a scanning pipeline without vendor lock-in or licensing overhead. Skip this if you need interactive exploitation or DAST integration with your WAF; extended-xss-search is a scanner for finding the vulnerability, not managing remediation workflows.
Startup and SMB security teams with limited scanning bandwidth should run Intruder XSS Scanner for its breadth across 75+ application vulnerabilities and 140,000+ infrastructure checks, all automated on a schedule you set once and forget. The authenticated scanning behind login pages and SPA support mean you're catching real-world XSS exposure in modern applications, not just the obvious entry points. Skip this if your priority is SAST integration into the developer IDE or if you need forensics-grade post-breach investigation; Intruder maps cleanly to continuous monitoring and risk identification, not incident response.
A better version of my xssfinder tool that scans for different types of XSS on a list of URLs.
XSS vulnerability scanner for web apps and APIs with automated scanning
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Common questions about comparing extended-xss-search vs Intruder XSS Scanner for your security scanning needs.
extended-xss-search: A better version of my xssfinder tool that scans for different types of XSS on a list of URLs..
Intruder XSS Scanner: XSS vulnerability scanner for web apps and APIs with automated scanning. built by Intruder. headquartered in United Kingdom. Core capabilities include Automated XSS vulnerability detection, 75+ application vulnerability checks, 140,000+ infrastructure security checks..
Both serve the Security Scanning market but differ in approach, feature depth, and target audience.
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