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GitBook alternatives · Docs & Wikis

Open-source alternatives to GitBook

GitBook is not described as open source on its own site. 20 of the 69 other docs and wiki tools in this directory are open source, according to their own sites.

GitBook has a free plan. Paid plans start at $65 per site / month, billed annually, plus $12 per user / month. All of them are free or have a free plan.

20 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

The 12 closest to GitBook

  1. Outline

    Fast team knowledge base and wiki, cloud-hosted or self-hosted

    • Outline starts at $10 per month for a team of 1 to 10 members (cloud-hosted). GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Only Outline lists macOS and Windows apps.
    • Outline is open source and self-hostable, according to its own site.
    • Outline also covers wiki.
    Outline vs GitBookOutline pricing and details

  2. Docusaurus

    Open-source static site generator for documentation

    • Docusaurus is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Docusaurus is open source, according to its own site.
    • GitBook also covers AI search and AI agents.
    Docusaurus vs GitBookDocusaurus pricing and details

  3. Gramax

    Open-source knowledge base that stores Markdown in Git

    • Gramax starts at $17 per editor / month, billed yearly ($20 billed monthly) (Cloud Business). GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Only Gramax lists macOS, Windows and Linux apps.
    • Gramax is open source and self-hostable, according to its own site.
    • Gramax also covers wiki and diagrams.
    Gramax vs GitBookGramax pricing and details

  4. MkDocs

    Static site generator for Markdown project documentation

    • MkDocs is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • MkDocs is open source, according to its own site.
    • GitBook also covers AI search and AI agents.
    MkDocs vs GitBookMkDocs pricing and details

  5. BookStack

    Free self-hosted wiki organized into books, chapters and pages

    • BookStack starts at £450 per year for an optional support plan; the software itself is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • BookStack is open source and self-hostable, according to its own site.
    • BookStack also covers wiki, templates and diagrams.
    • GitBook also covers AI search, AI agents and documents.
    BookStack pricing and details

  6. Wiki.js

    Open-source wiki software built on Node.js with Git sync

    • Wiki.js is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Wiki.js is open source and self-hostable, according to its own site.
    • Wiki.js also covers wiki and diagrams.
    • GitBook also covers AI search, AI agents and documents.
    Wiki.js pricing and details

  7. ONLYOFFICE

    Open-source office suite for documents, sheets, slides and PDFs

    • ONLYOFFICE starts at $20 per admin / month for the DocSpace Business cloud plan. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Only ONLYOFFICE lists Windows, macOS, Linux, iOS and Android apps.
    • ONLYOFFICE is open source and self-hostable, according to its own site.
    • ONLYOFFICE also covers spreadsheets and presentations.
    ONLYOFFICE pricing and details

  8. Etherpad

    Open-source real-time collaborative editor you host yourself

    • Etherpad is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Only Etherpad lists Windows, macOS and Linux apps.
    • Etherpad is open source and self-hostable, according to its own site.
    • GitBook also covers AI search, Markdown and AI agents.
    Etherpad pricing and details

  9. Documize

    Self-hosted knowledge base with approvals and analytics

    • Documize starts at $900 per year for up to 100 users. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Documize is open source and self-hostable, according to its own site.
    • Documize also covers wiki, templates and reports.
    • GitBook also covers AI search, Markdown and AI agents.
    Documize pricing and details

  10. Sphinx

    Documentation generator for Python projects and beyond

    • Sphinx is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • Only Sphinx lists macOS, Windows and Linux apps.
    • Only GitBook lists a web app.
    • Sphinx is open source, according to its own site.
    Sphinx pricing and details

  11. StackEdit

    Free in-browser Markdown editor with cloud sync

    • StackEdit is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • StackEdit is open source, according to its own site.
    • StackEdit also covers diagrams.
    • GitBook also covers AI search and AI agents.
    StackEdit pricing and details

  12. MediaWiki

    The free wiki software that powers Wikipedia

    • MediaWiki is free. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month.
    • MediaWiki is open source and self-hostable, according to its own site.
    • MediaWiki also covers wiki.
    • GitBook also covers AI search, Markdown, AI agents and documents.
    MediaWiki pricing and details

8 more that are open source

All 20 in one table

Common questions

Is there an open-source alternative to GitBook?

Yes. Outline, Docusaurus, Gramax, MkDocs, BookStack, Wiki.js, ONLYOFFICE, Etherpad and 12 more are open source, according to their own sites.

Is GitBook open source?

GitBook is not described as open source on its own site. The listing was checked on Oct 9, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to GitBook: the alternatives its listing names first, then the tools that share the most features with it.