
Description: Pixel Ruler is a simple online tool used to measure sizes and distances in pixels on a screen. It provides a customizable ruler overlay on the screen to quickly get pixel dimensions of UI elements or images.
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