Comparium is described as 'Cross-browser website testing on popular platforms'. There are seven alternatives to Comparium, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Android. The best alternative is LambdaTest, which is free. Other great sites and apps similar to Comparium are BrowserStack (Paid), Browserling (Freemium), CrossBrowserTesting (Paid) and MultiBrowser (Paid).
Browserling lets you quickly cross-browser test your websites in all the most popular browsers, such as Internet Explorer, Chrome, Safari, Opera and Firefox. We run the browsers in virtual machines and you get live access to them.
The all-in-one web testing platform supports manual, visual, and automated testing across more than 1500 different desktop and mobile browser configurations. Test on Safari, Internet Explorer, Android, iOS, and more.
MultiBrowser (or Multi-Browser Viewer) is a cross browser and functional web testing software tool, using REAL standalone browsers, an accurate mobile emulator and integrates seamlessly with Visual Studio and Selenium for automated testing. Main features: