
Description: LibreLingo is a free and open-source language learning platform. It provides interactive lessons for over 40 languages with vocabulary flashcards, grammar exercises, and pronunciation practice. The lessons are completely free with no ads or subscriptions required.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Clozemaster is a language learning tool focused on building vocabulary through an adaptive spaced repetition system. Users practice filling in the blanks in sentences in their target language.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API