
Description: Rebelle is a digital painting software focused on realistic and impressionist styles. It simulates the behavior of real artistic media like acrylic, watercolor, and oil paint. Key features include wet diffusion, color blending, base coats, resaturation, and a unique real-time stroke preview.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API