
Description: KRuler is an open source screen ruler utility for Linux. It provides horizontal and vertical rulers to measure distances on the screen. Useful for designers and developers to quickly measure UI elements.
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