Free website security scanner that checks HTTP headers, TLS/SSL, DNS security, CSP violations reporting and web server hardening with actionable fix guidance.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online


One of the most popular alternatives to Wappalyzer is BuiltWith, which has a free version. Other popular alternatives are WhatRuns, urlscan.io, SiteRecipe and Similar Tech. Technology Identifiers like Wappalyzer are a crowded field, with more than 25 alternatives for the web, Chrome OS, self-hosting, Android and Mac.
Free website security scanner that checks HTTP headers, TLS/SSL, DNS security, CSP violations reporting and web server hardening with actionable fix guidance.

