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Open Source Collaborative Notes & Wikis using Sentry

A curated collection of the best open source platforms for collaborative note-taking and building wikis. using Sentry.

Affine

Docs, whiteboards, and databases in one privacy-first workspace

  • Stars

    73,998

  • Last commit

    4 days ago

  • License

    MIT
An open-source, local-first knowledge base that merges structured docs, infinite whiteboards, databases, and AI into a single workspace for teams and creators.

Open Source Alternative to:

Notion

Outline

Fast, collaborative wiki for teams who need organized docs

  • Stars

    41,123

  • Last commit

    18 hours ago

  • License

    BUSL-1.1
Team knowledge base with real-time collaboration, AI-powered search, Slack integration, and self-hosting support for internal docs and wikis.

Open Source Alternative to:

Notion

Tolaria

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

  • Stars

    20,404

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
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:

Obsidian
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