Responsinator is described as 'helps website makers quickly get an indication of how their responsive site will look on the most popular devices. It does not precisely replicate how it will look, for accurate testing always test on the real devices' and is an website in the Development category. There are three alternatives to Responsinator, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows, Microsoft Edge and Firefox. The best alternative is Responsively, which is both free and Open Source. Other great sites and apps similar to Responsinator are Sizzy (Paid) and Blisk (Freemium).
Web Engineering cannot get any easier! Features: - Instant Preview: Preview all target screens in a single window side-by-side. Brings down your development time! - Developer First: Use your already-familiar dev-tools from the browser. No additional learning curve!
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.