AppCheck Infrastructure Scanner is a commercial security scanning tool by AppCheck. extended-xss-search is a free security scanning tool. 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:
SMBs and mid-market teams without dedicated vulnerability management staff should pick AppCheck Infrastructure Scanner for its unlimited scanning and users, removing seat-based licensing friction that kills adoption. The proprietary VulnFeed database detects over 20,000 products and tens of thousands of CVEs with authenticated scanning that catches what surface-level tools miss, and RBAC plus role-based reporting let security generalists delegate tasks without handing out admin access. Skip this if your primary need is web application scanning; the infrastructure focus is strong, but the web scanning is secondary to the core network and data center mission.
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.
Infrastructure vulnerability scanner for networks, data centers, and cloud
A better version of my xssfinder tool that scans for different types of XSS on a list of URLs.
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Common questions about comparing AppCheck Infrastructure Scanner vs extended-xss-search for your security scanning needs.
AppCheck Infrastructure Scanner: Infrastructure vulnerability scanner for networks, data centers, and cloud. built by AppCheck. headquartered in United Kingdom. Core capabilities include Proprietary vulnerability database (VulnFeed) with continuous updates, Over 20,000 product detections and tens of thousands of CVE detections, Authenticated scanning for deeper vulnerability assessments..
extended-xss-search: A better version of my xssfinder tool that scans for different types of XSS on a list of URLs..
Both serve the Security Scanning market but differ in approach, feature depth, and target audience.
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