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Top Open Source Note Taking & Knowledge Management Tools in 2026

A curated collection of the 2 best free and open-source Note Taking & Knowledge Management tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.

  • Open-Notebook

    Privacy-first AI-powered note-taking platform

    Stars
    37,723
    Last commit
    1mo ago
    License
    MIT

  • Deta Surf

    AI-powered notebook for organizing web and file research

    Stars
    3,542
    Last commit
    3mo ago
    License
    Apache-2.0
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Showing 2 of 2 open-source tools