
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Notable is a free, open-source note taking app that emphasizes simplicity and ease of use. It has basic formatting options, tags for organization, full-text search, and supports syncing to various cloud services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API