AppCheck SPA Scanner vs ZAP The Zed Attack Proxy: side-by-side comparison (2026)

AppCheck SPA Scanner: DAST scanner for Single Page Applications using headless browser technology. Built by AppCheck.

ZAP The Zed Attack Proxy: ZAP is an open-source web application security scanner that helps identify vulnerabilities through automated scanning and manual testing capabilities.

The table above shows where their features, integrations, deployment and company size fit differ.

AppCheck SPA Scanner is made by AppCheck. ZAP The Zed Attack Proxy is open-source with 14,060 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. AppCheck SPA Scanner and ZAP The Zed Attack Proxy are both Dynamic Application Security Testing products, and both cover Web Security. Key differences: AppCheck SPA Scanner is Commercial while ZAP The Zed Attack Proxy is Free, ZAP The Zed Attack Proxy is open-source. Use the table above to see where features, deployment and company size fit differ.