https://www.thesitewizard.com/webdesign/multiplebrowsers.shtml
How to Check Your Website with Multiple Browsers on a Single Machine (Cross-Browser Compatibility...
How to install multiple browsers to check your website on a single machine.
how to checkcross browser compatibility
https://www.browserstack.com/guide/cross-browser-compatibility-testing-beyond-chrome
Cross Browser Compatibility Testing beyond Chrome | BrowserStack
cross browser compatibilitytestingbeyondchromebrowserstack
https://dicloak.com/develop/dic-sdk
Browser SDK — Providing Cross-Browser Compatibility for Automation
Offers high-precision metric management, environment isolation, and process control capabilities to help developers build secure, stable, and scalable systems.
browser sdkprovidingcrosscompatibilityautomation