Responsively App

Responsively App is a modified browser which built using Electron for testing the responsiveness of web applications

Features

Mirrored User-interactions across all devices.
Any click, scroll or navigation that you perform in one device will be replicated to all devices in real-time.
Customizable preview layout to suit all your needs.
One handy elements inspector for all devices in preview.
Device profiles.
Has 30+ built-in device profiles covering all major devices. You can even add new custom device profiles as you like.
One-click screenshot.
Get instant feedback on the pages that you develop with the powerful screenshots tool. Take full page screenshot of all devices or a specific device with just a single click.
Hot reloading supported for developers.
Reload your pages and see the changes on every save.