$ account laurent22
Joplin is a mature, cross-platform note-taking and synchronization application built on a monorepo architecture using Yarn Workspaces. It comprises four primary application layers: a desktop client (Electron/React), a mobile client (React Native), a CLI tool (Node.js), and a self-hosted server (Node.js/Koa). The core business logic resides in `packages/lib`, which handles data models (Notes, Folders, Tags), encryption (E2EE), and synchronization protocols (WebDAV, Joplin Server, Dropbox, etc.). The codebase demonstrates strong engineering practices with TypeScript, Redux state management, and a robust plugin system that allows third-party extensibility via a defined API. It supports multiple editor backends (CodeMirror, ProseMirror, TinyMCE) and integrates native modules for performance-critical tasks like OneNote parsing (Rust) and voice transcription (Whisper).