
Description: Screen Calipers is a screen ruler app used for measuring sizes and distances on a computer screen. It provides digital calipers, protractors, rulers, and other tools for precise on-screen measurements.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: A Ruler for Windows is a free on-screen ruler application for Windows. It provides horizontal and vertical rulers to measure things on your screen, useful for graphics work.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API