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


Web Check is described as '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' and is a popular Website Audit tool in the security & privacy category. There are more than 10 alternatives to Web Check for a variety of platforms, including Web-based, Google Chrome, Mozilla Firefox, Mac and Windows apps. The best Web Check alternative is SiteOne Crawler, which is both free and Open Source. Other great apps like Web Check are Google Lighthouse, SpiderFoot, Pingdom and PageSpeed Insights.
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.


Screpy is an AI-based web analysis tool that can analyze all pages of your websites in one dashboard and monitor them with your team. It's powered by Lighthouse and it also includes some different analysis tools (SEO, SERP, W3C, Uptime, etc).




sn0int is a semi-automatic OSINT framework and package manager. It was built for IT security professionals and bug hunters to gather intelligence about a given target or about yourself. sn0int is enumerating attack surface by semi-automatically processing public information and...

Easily monitor your Websites, Domains, Servers, SSL-Certificates, Cronjobs and create amazing Status Pages. Get notified by Email, SMS, Slack, Discord and more.




Real-time uptime monitoring for Shopify stores. Get instant alerts when Stripe, Klaviyo, ShipStation, or any of your 80+ e-commerce services goes down.



A free page speed test and load behavior analyzer, that also allows you to perform optimization experiments without making changes to your code.


Nightlamp provides real-time monitoring and real-engineer diagnostics for no-code platforms like Bubble, Lovable, Webflow, and more. Unlike standard uptime monitors, Nightlamp goes beyond status checks by paging a human engineer to reproduce the issue, identify the root cause...

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...


