Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.
United Kingdom
Mozilla Observatory Alternatives
Mozilla Observatory has been discontinued. Similar apps include Web Check, which is free and open source. Other options are SiteOne Crawler, Google Lighthouse, SpiderFoot and Porch by denyfirst. You can choose from more than 10 Website Audit Tools like Mozilla Observatory for the web, self-hosting, Linux, Windows and Mac.
Alternatives list
- 24 Web Check alternatives
A free in-depth website analyzer providing audits of security, performance, SEO, accessibility and other technical aspects. Available as a desktop application for Windows/macOS/Linux and as a CLI tool for advanced users and CI/CD processes. It also includes an offline web page exporter.
Czechia
EU
+9
59 Google Lighthouse alternativesLighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
United States
+3
31 SpiderFoot alternativesAutomates open source intelligence by collecting, analyzing, and correlating data from diverse sources, offering web and command-line interfaces, modular plugins, detailed reports, data export, platform flexibility, and support for advanced integrations.
Malta- EU
Self-hosted checks of what your servers show the outside world: TLS, website, mail and DNS, graded against published standards.
Cost / License
- Free
- Open Source (AGPL-3.0)
Since
- New
30 OSINT-tool alternativesOSINT tool is a browser extension and web application built for researchers, investigators, journalists and intelligence analysts. Our extension gives you access to a suite of OSINT utilities directly on any webpage you visit.
Cost / License
- Paid
- Proprietary
Since
- Since 2023
South Africa
+2
57 PageSpeed Insights alternativesPageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.
- United States
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.
- United States
42 WebPageTest alternativesRun a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.
Cost / License
- Free
- Open Source
Since
- Since 2014
- United States
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.
Cost / License
- Free
- Proprietary
Since
- Since 2020
- United States
REDbot is lint for HTTP resources. it tests protocol correctness, cacheability, content negotiation and more.
Cost / License
- Free
- Open Source
Since
- Since 2023
Australia
Hardenize provides a comprehensive and free assessment of web site network and security configuration.
Cost / License
- Free
- Proprietary
Since
- Since 2020
- United Kingdom
Germany
