The comparison examines two contemporary security platforms, ProjectDiscovery and Detectify, highlighting their distinct approaches to vulnerability assessment and attack surface management. ProjectDiscovery is praised for its powerful open-source tools, particularly the Nuclei engine, which offers customizable solutions for newly disclosed public Common Vulnerabilities and Exposures (CVEs). On the other hand, Detectify is distinguished by its proprietary scanning engine, which leverages contributions from a private community of elite ethical hackers, known as Detectify Crowdsource, to identify novel, non-CVE vulnerabilities. These foundational differences result in varied strengths regarding assessment capabilities, usability, and workflows for application security teams. The comparison is based on feedback from potential clients who evaluated Detectify as an alternative to ProjectDiscovery, as well as information from ProjectDiscovery’s official resources and publicly accessible demos.