Ciyue
An MDict/StarDict dictionary app
Ciyue is a free, open-source dictionary and language learning application for Android, Windows, macOS, and Linux. It supports MDict MDX/MDD and StarDict dictionary formats, allowing users to build personalized reference libraries. Multiple dictionaries can be searched simultaneously for comprehensive word definitions. Its translation tools integrate free services and AI providers such as OpenAI, Gemini, and DeepSeek. An AI chat assistant supports custom prompts and writing corrections. Vocabulary management includes word books, mistake books, review quizzes, and flashcards with FSRS spaced repetition. Pronunciation packs and text-to-speech help users practice listening and pronunciation. A floating lookup window provides quick access to definitions, while Material You styling offers a modern interface.