Apps similar to MultiBrowser include BrowserStack. It's paid, but IETester is free. Other options are TestMu AI , Browserling, LT Browser and Polypane. You can choose from more than 10 Web Debuggers like MultiBrowser for the web, Windows, Mac, Linux and self-hosting.
TestMu AI (Formerly LambdaTest) is a full-stack AI platform for automated testing across web, mobile, and enterprise apps with agent-driven analysis, real device and browser support, parallel execution, and CI/CD integration for scalable quality assurance and detailed analytics.
United States
BrowserStack is the world’s largest cloud platform for software testing, with 20,000+ real Android and iOS devices that allow developers to comprehensively test their websites and apps for functionality, performance, and visual appeal.
India
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.
United States
Enables real-time debugging of websites on mobile and tablet views, supports 50+ device profiles, allows side-by-side testing, custom device setups, separate Dev Tools for each device, and screens for responsive design, all within a web-based platform.
United States
Polypane is a browser built from the ground up to create websites and apps. Polypane is the only browser that lets you develop a website for all viewports and devices at once, and gives you the best overview of them.
Netherlands
EU
Online service for testing mobile and responsive websites in various device emulators. The free version includes 6 devices and by subscribing for $9.99/month members get more than 100 devices.
NetherlandsEU
Blisk is a browser for web developers, QA engineers, and web designers with built-in mobiles, tablets, laptops, and desktops. It provides teams and freelancers with a workspace to develop and test modern web applications twice faster.
Ukraine
Cross browser compatibility testing with Selenium Online. Automatically test your website on multiple browsers with Selenium.
BelgiumEU
IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE11, IE10, IE9, IE8, IE7 IE 6 and IE5.5 on Windows 8 desktop, Windows 7, Vista and XP, as well as the installed IE in the same process.
United States
Comparium is a convenient web application to test any website on any operating system and browser combination.
Sauce Labs provides the world’s largest cloud-based platform for the automated testing of web and mobile applications. Its award-winning service eliminates the time and expense of maintaining an in-house testing infrastructure, freeing development teams of any size to innovate...
United States
Free online HTML tool that shows instantly how your website looks like in Microsoft Internet Explorer 8, 7, 6 and 5.5.
United States
