Notesnook: fully open source & end-to-end encrypted note taking alternative to Evernote

Notesnook is a free (as in speech) & open source note-taking app focused on user privacy & ease of use. To ensure zero knowledge principles, Notesnook encrypts everything on your device using XChaCha20-Poly1305 & Argon2.

The project is written in JavaScript, TyepScript, React, and React Native for mobile apps.

Features

• Fancy user interface that is easy to use even for nontechnical users
• Works online and with all modern web browsers
• Built-in full-text search
• Sync your notes and settings to the server
• Mobile app for Android and iOS
• Supports Markdown by default
• Comes with a trash option to trash and not delete the notes
• Easily manage your notes through tags and favorites
• Built-in dark mode support
• Notesnook encrypts your notes by default
• Supports attachments with encryption option
• Share password protection notes easily
• App lock for your mobile note apps
• Supports encrypted image, media files, and office documents
• Offline mode
• WYSIWYG editor with tables, checklist, code blocks, and Markdown shortcuts support
• Native clients for Linux, Windows, and macOS