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Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Secure private note-taking app with end-to-end encryption
Notesnook offers a free, open-source note-taking experience that encrypts every entry on-device using XChaCha20-Poly1305 and Argon2, delivering Evernote-like features without compromising privacy.
Notesnook is a privacy‑first note‑taking solution built for individuals and teams who demand that their data never leave their devices unencrypted. By applying XChaCha20‑Poly1305 and Argon2 directly in the browser or native client, the app guarantees zero‑knowledge storage while preserving a familiar, Evernote‑style workflow.
The monorepo delivers web, desktop (Electron) and mobile (React Native) clients from a shared TypeScript core, enabling seamless cross‑platform use. Offline‑first design leverages IndexedDB streaming for fast local access, and the GPL‑3.0 license invites community contributions and self‑hosting. Developers can extend functionality through the modular packages (editor, crypto, clipper, theme, etc.) while the Nx workspace simplifies maintenance.
Privacy‑conscious professionals, students, and open‑source enthusiasts gain a secure, feature‑rich notebook without vendor lock‑in. The app is ready to run on any modern device, with optional self‑hosted backups for those who need extra resilience.
When teams consider Notesnook, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Secure personal journal
All entries are encrypted locally and can be accessed on any device without exposing content to third parties.
Confidential project notes
Team members store and retrieve project details securely, with optional self‑hosted backups for disaster recovery.
Research data collection
Researchers capture field notes on mobile, sync via encrypted files, and analyze them later on desktop without data leakage.
Password‑protected knowledge base
Organizations maintain internal documentation that remains unreadable without the user’s encryption key.
Notesnook encrypts every note on the device using XChaCha20‑Poly1305 for confidentiality and Argon2 for key derivation, ensuring zero‑knowledge storage.
Sync is possible by exporting encrypted backup files and importing them on another device; the service does not store plaintext data.
Notesnook does not offer a proprietary cloud; users can choose their own storage solutions (e.g., Dropbox, Google Drive) for encrypted backups.
Web browsers, Windows/macOS/Linux via Electron, and Android/iOS via React Native, all built from the same monorepo.
Yes, the entire project is released under the GPL‑3.0 license and available on GitHub.
Project at a glance
ActiveLast synced 4 days ago
