Being a developer, responsive testing comes as a part of the package, every time I develop a webpage. I have been relying over LambdaTest for responsive testing. They have a feature which allows me to capture full page screenshots of my webpages in scores of different devices. I could even capture web pages that are locally hosted. And now, they have come up with a browser that lets me not only capture screenshots but interact with my websites in 25+ different devices, in a side by side view. That allows me to test my website responsiveness on a bunch of devices in a live-interactive manner. I must admit I am highly impressed by the LT browser and I am a tough guy to impress.