Screenfly is described as 'Test any website at a multitude of common screen resolutions, including desktop monitors, tablets, and smaller mobile devices' and is an website in the development category. There are three alternatives to Screenfly, not only websites but also apps for Self-Hosted. The best Screenfly alternative is Responsa, which is both free and Open Source. Other great sites and apps similar to Screenfly are Resizer, by Google and ScreenSize.net.
Responsa is an responsive design tool for testing how designs will look across multiple browsers. The open-source tool is freely available online, with the code being accessible for those seeking a self-hosted solution as well.
An interactive viewer to see and test how digital products respond to material design breakpoints across desktop, mobile and tablet.
ScreenSize.net is a lightweight, zero-clutter web utility designed to streamline the responsive design process. Whether you are a front-end developer building layouts or a UI/UX designer verifying breakpoints, this tool provides instant, accurate data on screen resolutions, CSS...
