
Description: Visualtip is a free and open-source graphic and vector design software. It provides users with a wide range of tools for digital drawing, illustration, painting, sketching, and vector graphic design. Some key features include a smooth workflow, non-destructive editing, support for layers and masks, and compatibility with industry-standard graphics formats.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Red Pen is an open-source proofreading tool for identifying writing issues in documents. It checks for spelling, grammar, style, and localization issues in over 20 languages.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API