Learn, Read & Watch Through Content You Love
Smart reader + real-time translation + video player. Read foreign articles and watch videos with ease.
Powered by AI, 100% local, completely free and open source.
What is OpenKoto
OpenKoto is an open-source, AI-powered language learning application that lets you learn from any content you're interested in.
Smart Text Import
One-click import from URLs, Word documents, Markdown files, and more. Automatic translation and vocabulary extraction.
Immersive Reading Mode
Professional reader interface with real-time language switching, instant word lookup and grammar parsing.
AI Learning Assistant
Intelligent word explanations in context, detailed grammar breakdowns, and pronunciation guidance.
Personalized Learning
Highlight any text and ask questions in real-time. Your learning, your way.
Why Choose OpenKoto
Unlike traditional language learning apps with fixed curriculums, OpenKoto empowers you to learn from real-world content.
Key Features of OpenKoto
Everything you need to master any language through content you actually enjoy.
Smart Text Import
One-click import from URLs, Word, Markdown with auto translation and vocabulary extraction.
Immersive Reading
Professional reader with real-time language switching and instant word lookup.
AI Learning Assistant
Context-aware word explanations, grammar breakdowns in your native language.
Video Learning
Learn from YouTube videos with synchronized subtitles and transcription support.
100+ Languages
Japanese (with furigana), English, Chinese, Korean, French, German, Spanish and more.
100% Local & Private
Native desktop app built with Tauri + Rust. Fast, secure, your data stays on your device.
Frequently Asked Questions
Have more questions? Open an issue on GitHub or join our discussions.
Start Your Language Learning Journey
Download OpenKoto today and learn languages through content you love.