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Open Source Personal Knowledge Management (PKM) Tools using Ruby

A curated collection of the best open source tools for organizing personal information and building knowledge graphs. using Ruby.

Joplin

Encrypted note-taking that syncs across all your devices

  • Stars

    56,856

  • Last commit

    11 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

Notesnook

Zero-knowledge encrypted notes that sync across all devices

  • Stars

    14,824

  • Last commit

    21 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

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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