
Description: Chessable is a software platform designed to help chess players study and memorize chess openings, tactics, endgames, and other aspects of the game. It uses spaced repetition and other learning techniques to help retention.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Listudy is a free and open-source spaced repetition flashcard app for learning languages. It supports creating decks, adding flashcards with rich formatting, scheduling reviews with spaced repetition, tracking progress, and exporting/importing data.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API