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Notesnook Sync Server

Self-hosted backend for the Notesnook encrypted notes app

Notes & Knowledge Base ★ 937 stars Medium setup AGPL-3.0

The Notesnook sync server is the self-hostable backend for the Notesnook end-to-end encrypted note-taking application. It allows users to keep their encrypted note data fully under their own control.

Official siteSource code

Key features

  • Self-hosted sync backend
  • End-to-end encryption
  • Cross-platform clients
  • Open-source server

Strengths

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in C#
  • Lightweight — runs in 512 MB RAM

Is Notesnook Sync Server secure?

OSV.dev has no published security advisories for Notesnook Sync Server's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Notesnook Sync Server replaces

Self-hosted Evernote alternativesSelf-hosted OneNote alternatives

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SelfHostIndex: 78 · good

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