What are some alternatives?
When comparing Responsa and BrowserPage, you can also consider the following products
Blisk - Download Blisk - a browser for web developers. Blisk is a toolbox for development, debugging and testing: emulation, sync, analytics, and screenshots.
Polypane - The browser for developing responsive & accessible websites.
LT Browser by Lambdatest - LT Browser allows you to perform live mobile view debugging of your website on different devices. You can test on mobile and tablet simultaneously on our browser and debug user issues and see their impact on the go on a wise range of mobile devices.