Apps similar to HTTP Observatory include Web Check, which is free and open source. Other options are SiteOne Crawler, Google Lighthouse, SpiderFoot and Blacklight Privacy Inspector. You're spoiled for choice with Website Audit Tools like HTTP Observatory: we list more than 25 alternatives for the web, self-hosting, Linux, Windows and Mac.
PSI Lynx is a SaaS platform for running bulk Lighthouse and PageSpeed audits across many website pages. It helps SEO teams, developers, agencies, and business owners monitor Core Web Vitals, track performance history, and catch regressions after releases, plugin updates, design...
Cipherscan tests the ordering of the SSL/TLS ciphers on a given target, for all major versions of SSL and TLS. It also extracts some certificates informations, TLS options, OCSP stapling and more. Cipherscan is a wrapper above the openssl s_client command line.
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.
VersionDB tracks thousands of technologies across millions of live websites, from ecommerce platforms and CMSs to analytics, payments, and marketing tools.
Australia
Reviewing a website's Content-Security-Policy settings, suggesting improvements to protection, and possible bypasses to the policy.
PluginView is a hosted website-technology detection service. A user submits a public URL, and the service compares signals from the page against a proprietary fingerprint database to identify technologies such as ecommerce platforms, analytics tools, payment systems, chat...
United States
