
Description: Virtual ruler cm is a free online ruler that allows you to measure things on your screen without needing a physical ruler. It displays a virtual ruler on your screen that you can use to measure lengths in centimeters or inches.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: On-Screen Ruler is a free, lightweight Windows application that displays customizable rulers on your screen to help measure items. It offers horizontal and vertical rulers in imperial or metric units.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API