W3C mobileOK Checker : This checker performs various tests on a Web Page to determine its level of mobile-friendliness.
Site Valet : Web Tools for Quality, Accessibility, Standards Compliance.
Pa11y : Monitor the accessibility of your websites with pa11y-dashboard, and protect against accessibility errors creeping into your codebase.
Lighthouse : Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authenti...
Maestro : Maestro is the easiest way to automate UI testing for your mobile app.
The mobiReady testing tool evaluates mobile-readiness using industry best practices & standards.