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Open Source Secure & Encrypted Notes using Esbuild

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

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:

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

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:

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.

Open Source Alternative to: