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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.

Encrypted note-taking that syncs across all your devices

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:

Zero-knowledge encrypted notes that sync across all devices

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

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Privacy-focused note-taking made simple and fast

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: