
Description: LanguageTool is an open-source proofreading application that checks for grammar, style, and spelling issues in over 20 languages. It can be integrated into various text editors and web browsers as an add-on.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PaperRater is an online proofreading and plagiarism detection tool for students, writers, and professionals. It checks spelling, grammar, word choice, and plagiarism issues in documents.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API