Joplin

Joplin とは？

Joplin is a privacy-first, open-source note-taking and task management app that lets you create rich notes, to-dos, notebooks, and multimedia documents while keeping full control of your data. With end-to-end encryption, offline-first access, Markdown support, OCR search, and cross-platform sync, Joplin is built for users who value productivity without sacrificing privacy.