Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.


CodePhantom is described as 'Cutting-edge security scanning platform that empowers developers, DevOps teams, and businesses to maintain robust website security. Our automated platform performs comprehensive analysis of security headers, SSL/TLS configurations, DNS settings, and port' and is an website in the security & privacy category. There are seven alternatives to CodePhantom, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Mac and Windows apps. The best CodePhantom alternative is HTTP Observatory, which is both free and Open Source. Other great sites and apps similar to CodePhantom are Qualys SSL Server Test, Hardenize, Security Headers and TestSSL.
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.


This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet. Please note that the information you submit here is used only to provide you the service. We don't use the domain names or the test results, and we never will.

Hardenize provides a comprehensive and free assessment of web site network and security configuration.



Quickly and easily assess the security of your HTTP response headers.

Reviewing a website's Content-Security-Policy settings, suggesting improvements to protection, and possible bypasses to the policy.

The Website Security Test is a free online tool to perform web security and privacy tests:
