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SiYuan

A privacy-first note and knowledge workspace with built-in AI writing and Q&A

Research and notesWriting

A privacy-first note and knowledge workspace with built-in AI writing and Q&A. Built for: Writers and thinkers who want local-first notes with AI help. Format: App (desktop) + self-hosted. License: AGPL-3.0. Open source on GitHub (46,720 stars as of 2026-10-11).

Available on

DesktopSelf-hosted

Pricing

Free and open source; self-hosting, model or API costs may apply

Free tier available

free pricing

Price checked Oct 12, 2026

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Source

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