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Open Source Secure & Encrypted Notes using JavaScript

A curated collection of the best open source note-taking apps with a focus on security and end-to-end encryption. using JavaScript.

Memos

Self-hosted timeline for quick notes, logs, and snippets

  • Stars

    64,235

  • Last commit

    14 hours ago

  • License

    MIT
Memos is a self-hosted, open-source note-taking app built around a private timeline. Write in Markdown, skip the folder setup, and keep your data on your own server.

Open Source Alternative to:

Notion

Joplin

Encrypted note-taking that syncs across all your devices

  • Stars

    56,994

  • Last commit

    8 hours ago

  • License

    Unknown
Cross-platform note-taking app with end-to-end encryption, Markdown support, web clipping, and sync via Dropbox, OneDrive, or Joplin Cloud.

Open Source Alternative to:

Obsidian

Tolaria

Local-first, Git-native personal knowledge base with AI

  • Stars

    20,423

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
A free, open source note-taking app built on plain Markdown files, Git version control, and direct AI model integration. No account required.

Open Source Alternative to:

Obsidian

Notesnook

Zero-knowledge encrypted notes that sync across all devices

  • Stars

    14,875

  • Last commit

    16 hours ago

  • License

    GPL-3.0
End-to-end encrypted note-taking app with zero-knowledge architecture, cross-device sync, web clipper, and a self-hostable sync server.

Open Source Alternative to:

Notion

Standard Notes

Secure, encrypted notes for your digital life

  • Stars

    6,695

  • Last commit

    13 hours ago

  • License

    AGPL-3.0
Cross-platform note-taking app with end-to-end encryption, offline access, and powerful organization features for privacy-conscious users.

Open Source Alternative to:

Obsidian

Beaver Notes

Local-first notes app with no cloud, no AI, no tracking

  • Stars

    1,361

  • Last commit

    17 days ago

  • License

    MIT
A privacy-focused, offline-first note-taking app that stores everything on your device, with Markdown, note linking, file attachments, LaTeX math, and bring-your-own sync.

Open Source Alternative to:

Notion

Darkwrite

Distraction-free note-taking with powerful features

  • Stars

    320

  • Last commit

    18 days ago

  • License

    AGPL-3.0
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

Open Source Alternative to:

Notion

OpenNotas

Fast, secure, and free personal note-taking app

  • Stars

    179

  • Last commit

    3 months ago

  • License

    Unknown
OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.

Open Source Alternative to:

Obsidian

itsnotes

Self-hosted sticky notes with better organization

  • Stars

    43

  • Last commit

    4 days ago

  • License

    MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.

Open Source Alternative to:

Google Keep

Justnote

Privacy-focused note-taking made simple and fast

  • Stars

    67

  • Last commit

    9 months ago

  • License

    GPL-2.0
Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.

Open Source Alternative to:

Notion
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