Security Headers Alternatives

Security Headers is described as 'Quickly and easily assess the security of your HTTP response headers' and is an app in the security & privacy category. There are more than 10 alternatives to Security Headers for a variety of platforms, including Web-based, SaaS, Self-Hosted, Mac and Windows apps. The best Security Headers alternative is HTTP Observatory, which is both free and Open Source. Other great apps like Security Headers are DetectZeStack, ConfigClarity, REDbot and Qualys SSL Server Test.

More about Security Headers

Security Headers alternatives page was last updated Apr 2, 2026

HTTP Observatory
5 likes
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.
Cost / License
Free
Open Source (MPL-2.0)
Application type
Website Audit
Origin
United States
Platforms
Online
Self-Hosted
Is HTTP Observatory a good alternative to Security Headers?
DetectZeStack
Like
API suite for website intelligence: tech stack detection (Wappalyzer fingerprinting + DNS + TLS + HTTP headers), SSL/TLS certificate inspection, DNS intelligence with provider enrichment, security header analysis with letter grading, and technology change monitoring.
Cost / License
Freemium
Proprietary
Application type
Technology Identifier
Platforms
Online
Is DetectZeStack a good alternative to Security Headers?
ConfigClarity
Like
ConfigClarity is a suite of 6 browser-based audit tools for developers and sysadmins managing self-hosted infrastructure. Paste your configs and get instant visual audits with copy-paste fixes.
Cost / License
Free
Open Source (MIT)
Origin
United States
Platforms
Online
Is ConfigClarity a good alternative to Security Headers?
REDbot
2 likes
REDbot is lint for HTTP resources. it tests protocol correctness, cacheability, content negotiation and more.
Cost / License
Free
Open Source
Origin
Australia
Platforms
Online
Self-Hosted
Docker
Is REDbot a good alternative to Security Headers?
Qualys SSL Server Test
3 likes
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.
20 Qualys SSL Server Test alternatives
Cost / License
Free
Proprietary
Origin
United States
Platforms
Online
Is this a good alternative to Security Headers?
Hardenize
3 likes
Hardenize provides a comprehensive and free assessment of web site network and security configuration.
Cost / License
Free
Proprietary
Origin
United Kingdom
Platforms
Online
Software as a Service (SaaS)
Is Hardenize a good alternative to Security Headers?
SSL/TLS Security Test by ImmuniWeb
2 likes
The Website Security Test is a free online tool to perform web security and privacy tests:
Cost / License
Free
Proprietary
Origin
Switzerland
Platforms
Online
Is this a good alternative to Security Headers?
TestSSL
1 like
Testing TLS/SSL encryption anywhere on any port.
Cost / License
Free
Open Source (GPL-2.0)
Platforms
Mac
Windows
Linux
Is TestSSL a good alternative to Security Headers?
Guardr
2 likes
Free continuous website security scanner and uptime monitor. Scan any site in 2 seconds, we checks TLS/SSL, security headers, DNS, exposed files, misconfigs and cookies.
Cost / License
Freemium
Proprietary
Application types
Uptime Monitor
Website Monitoring
Origin
Israel
Platforms
Online
Software as a Service (SaaS)
Is Guardr a good alternative to Security Headers?
Scruty
1 like
Scruty is a comprehensive web security analysis platform that evaluates your website's security posture in seconds. It performs over 20 automated checks including SSL/TLS certificates, HTTP security headers (CSP, HSTS, X-Frame-Options), DNS configuration (DNSSEC, SPF, DKIM...
Cost / License
Freemium
Proprietary
Origin
France
EU
Platforms
Online
Software as a Service (SaaS)
Is Scruty a good alternative to Security Headers?
CSP evaluator
Like
Reviewing a website's Content-Security-Policy settings, suggesting improvements to protection, and possible bypasses to the policy.
Cost / License
Free
Proprietary
Platforms
Online
Is CSP evaluator a good alternative to Security Headers?
Cloud Cultivator
Like
Comprehensive SSL/TLS monitoring. We proactively monitor your SSL/TLS enabled domains to prevent expiry, misconfiguration, and insecure protocols. We watch and report any changes to your certificate so you can detect and respond to attempts at tampering or domain takeover.
Cost / License
Paid
Proprietary
Platforms
Online
Software as a Service (SaaS)
+1
Is Cloud Cultivator a good alternative to Security Headers?