BrowserStack is a cloud-based testing platform that enables developers to test their websites across various browsers on different operating systems and mobile...
Starting from $29/month
Best Responsively App Alternatives ranked by AI · updated Aug 2026
Responsively App is a free, open-source desktop browser for testing websites across synchronized device views. It is aimed at frontend developers who need live multi-viewport previews alongside inspection and debugging tools.
Top 6 Responsively App alternatives
Blisk is a browser specifically designed for web development and testing, offering device synchronization, debugging, and more.
Free, with a premium option available
LambdaTest is a cloud-based cross-browser testing platform that helps in running automated and live interactive tests on various web browsers and operating...
Starting from $15 per month
Polypane is a web development tool that allows you to build responsive websites faster with multiple synchronized views and integrated developer tools.
Starting from $15/month
Sizzy is a tool for developing responsive websites and testing them on multiple devices at once.
Starting at $19/month
6
Multi Screen Test
Multi Screen Test
Multi Screen Test is a browser-based tool for previewing websites across multiple screen sizes and device resolutions. It is aimed at web...
Pros
- Free and usable directly in a browser
- Shows multiple viewport sizes simultaneously
- Faster for basic responsive checks than configuring devices manually
Cons
- Less comprehensive than cloud testing platforms such as BrowserStack
- Limited interaction and debugging features
- Does not replace testing on physical devices
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