Open-Source DevOps · streetwriters

notesnook

Notesnook is an open-source, end-to-end encrypted note-taking app built with React and available across web, desktop (Electron), and mobile (React Native) platforms. It uses XChaCha20-Poly1305 and Argon2 encryption to ensure notes remain private and unreadable to the service operator.

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Source: GitHub — github.com/streetwriters/notesnook

14.2k

GitHub stars

966

Forks

TypeScript

Primary language

GPL-3.0

License (OSI-approved)

Key facts

Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.

Field	Value
Repository	streetwriters/notesnook
Owner	streetwriters
Primary language	TypeScript
License	GPL-3.0 — OSI-approved
Stars	14.2k
Forks	966
Open issues	942
Latest release	v3.4.3 (2026-07-06)
Last updated	2026-07-08
Source	https://github.com/streetwriters/notesnook

What notesnook is

TypeScript/JavaScript monorepo using React (web/desktop via Electron), React Native (mobile), and a shared @notesnook/core library. Cryptography is handled via @notesnook/crypto wrapper around libsodium. Data storage uses IndexedDB-based file system with streaming support.

Quickstart

Get the notesnook source

Clone the repository and explore it locally.

terminalbash

1git clone https://github.com/streetwriters/notesnook.git2cd notesnook3# follow the project's README for install & configuration

Need it deployed, integrated, or customized instead? DEV.co ships production installs.

Best use cases

Privacy-focused note application replacement

Deploy as a self-hosted or client-side alternative to Evernote/OneNote where user data encryption and zero-knowledge principles are non-negotiable.

Multi-platform client development template

Reference architecture for building React-based applications that span web, desktop (Electron), and mobile (React Native) from a unified codebase.

End-to-end encryption implementation study

Examine real-world E2EE patterns in production: key derivation (Argon2), AEAD cipher usage (XChaCha20-Poly1305), and client-side crypto integration across multiple platforms.

Implementation considerations

Monorepo structure requires npm (not Yarn/pnpm); ensure build tooling compatibility and dependency resolution discipline across apps/packages.
Cryptography library (@notesnook/crypto wraps libsodium). Validate libsodium version pinning, review any C-binding or native module compilation on target platforms.
Requires email-based account management; review privacy implications and backup/recovery flows if self-hosting backend.
IndexedDB storage layer limits scalability; suitable for client-side use but not for large-scale server-side caching.
Open issue count (942) suggests ongoing stabilization; perform security code review and vulnerability scanning before any production deployment.

When to avoid it — and what to weigh

Proprietary licensing required — GPL-3.0 mandates source code disclosure for derivative works and same-license distribution. Commercial closed-source modifications are not permitted.
Minimal maintenance tolerance — Project shows 942 open issues. While actively developed (pushed 2026-07-08), adoption of this codebase for production systems requires in-house engineering capacity to maintain and address security concerns.
Dependency on Electron/React Native stability — Desktop and mobile tiers depend on Electron and React Native ecosystems. Performance or security issues in those frameworks directly impact Notesnook stability.
Regulatory/compliance-heavy environments — Unknown whether the application meets SOC 2, HIPAA, GDPR data residency, or audit requirements. No third-party security audit data provided.

License & commercial use

GPL-3.0 (GNU General Public License v3.0). Permissive for study and self-hosted use; copyleft clause requires any modifications distributed to end users be licensed under GPL-3.0 with source code disclosed.

GPL-3.0 is a copyleft license. Commercial use of Notesnook as-is (as a service or redistributed software) requires: (1) entire source code disclosure to users, (2) derived works remain GPL-3.0 licensed. Bundling into proprietary products or closed-source SaaS without source disclosure violates the license. Consult legal counsel before any commercial deployment.

DEV.co evaluation signals

Editorial assessment — not user reviews. Directional, with an explicit confidence level.

Signal	Assessment
Maintenance	Active
Documentation	Adequate
License clarity	Clear
Deployment complexity	High
DEV.co fit	Good
Assessment confidence	High

Security considerations

Notesnook claims XChaCha20-Poly1305 and Argon2 for encryption. Cryptography choices appear sound for E2EE note-taking. However: (1) No third-party security audit linked; (2) Open issue count may include unpatched vulnerabilities; (3) Libsodium bindings and native modules require version audit; (4) Backend authentication, key escrow, and account recovery mechanisms not detailed; (5) No published threat model or security policy. Conduct independent code review and penetration testing before any regulated/sensitive use.

Alternatives to consider

Joplin

Open-source note-taking app with E2EE, similar cross-platform support (Electron, React Native). AGPL-3.0 license; larger community and more mature documentation.

Logseq

Open-source (AGPL-3.0), markdown-based note app with local-first encryption option. Strong for knowledge management and backlinking; less emphasis on traditional E2EE.

Standard Notes

Open-source E2EE notes app with optional server backend. AGPL-3.0; more mature SaaS option with published security audits. Requires subscription for full features.

Software development agency

Build on notesnook with DEV.co software developers

Our team can help you assess GPL compliance, conduct security audits, design multi-platform deployment architecture, and build or customize open-source note-taking solutions. Contact us to discuss your requirements.

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notesnook FAQ

Can we use Notesnook in a commercial product or SaaS?

GPL-3.0 requires source code disclosure to all users and mandates derivative works remain GPL-3.0. Closed-source commercial use is not permitted without explicit dual licensing from the authors. Contact streetwriters for commercial licensing options.

Does Notesnook include a backend/server, or is it client-only?

README does not detail backend architecture. The repository contains client code (web, desktop, mobile). Backend API and database implementation are either not included or undocumented in the excerpt provided. Review full source or deployment guides for server setup.

Is Notesnook suitable for regulated industries (healthcare, finance)?

Unknown. No SOC 2, HIPAA, or GDPR compliance certifications are mentioned. No third-party security audit or compliance reports are linked. Conduct a full legal and security review before use in regulated environments.

What is the current maturity level?

Active development (v3.4.3, 2026-07-06) with 942 open issues. Community-driven; no commercial SLA. Suitable for self-hosted or enthusiast use; production deployments require in-house maintenance capacity and security review.

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