AppCheck Infrastructure Scanner vs extended-xss-search: Side-by-Side Comparison (2026)

AppCheck Infrastructure Scanner: Infrastructure vulnerability scanner for networks, data centers, and cloud. built by AppCheck. 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.

AppCheck Infrastructure Scanner is developed by AppCheck. extended-xss-search is open-source with 187 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

AppCheck Infrastructure Scanner and extended-xss-search serve similar Security Scanning use cases: both are Security Scanning tools. Key differences: AppCheck Infrastructure Scanner is Commercial while extended-xss-search is Free, extended-xss-search is open-source. Review the feature comparison above to determine which fits your requirements.