
Description: Sizzy is a browser tool that allows web developers and designers to preview their websites on multiple device sizes simultaneously. It displays rezisions of the website on different device viewports like desktop, tablet, and mobile to help build responsive designs.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MultiGlancer is a multipurpose software that allows you to glance at multiple windows, applications, files, and folders simultaneously on your desktop. It arranges all open windows neatly in a grid layout for easy viewing and switching.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API