
Description: Charcoal is a minimalist drawing software focused on digital sketching and concept art creation. It offers an intuitive interface for fast drawing, uses graphics tablet stylus pressure for natural drawing strokes, and has useful tools for basic operations like layers, shapes and colors.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MultiDraw is a free, open-source vector graphics editor for Windows, Mac and Linux. It allows users to create illustrations, diagrams, charts, floorplans and more. MultiDraw has a simple, intuitive interface, customizable tools and supports many file formats.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API