
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Shottr is a free and open-source screenshot tool for Windows. It provides basic screenshot capturing and editing features like adding text, arrows, highlighting etc. Shottr is good for quick annotation of screenshots.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API