
Description: MyPaint is a free and open-source raster graphics editor specialized for digital painters. It has a focus on painting rather than image manipulation and uses a brush engine to simulate real media like oils or watercolors.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Black Ink is a digital handwriting app designed for creative professionals. It allows you to write, sketch, and illustrate using an Apple Pencil or other stylus for a natural pen-to-paper feel. Key features include pressure sensitivity, palm rejection, customizable brushes and color palettes.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API