
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: PaperColor is a free, open-source software that provides different color schemes and themes for reading and writing documents in LaTeX. It aims to make reading LaTeX documents more accessible and comfortable for long periods.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API