
Description: PaintTool SAI is a lightweight digital painting app for Windows. It has customizable brushes, layers, and canvas rotation for creating digital artwork. The interface is simple and intuitive for quickly sketching ideas.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Clover Paint is a free and open source raster graphics editor for Windows, Mac and Linux. It has a simple, intuitive interface with basic drawing and image editing tools such as brushes, shape tools, color picker, layers and filters. Easy for beginners to learn and use.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API