Docs and wikis
Free GitBook alternatives
GitBook (Docs and knowledge base for technical teams) is a commercial product. These 2 tools do the same job and are free to use or to self-host.
Short answer: the best free alternatives to GitBook are Docusaurus and Outline. GitBook starts at $65/mo per site. Self-hosting is free; you pay only for the server (a small VPS is about $4–6/mo). Licenses and prices checked 2026-10-01.
Docs sites from Markdown, by Meta.
Open source (MIT) ·details
Internal knowledge base.
Source-available (BSL-1.1) ·details
Want paid options too? See all GitBook alternatives or the full free alternatives list.
FAQ
Is there a free alternative to GitBook?+
Yes. Docusaurus and Outline do the same job for free; Docusaurus is open source.
What is the best open-source alternative to GitBook?+
Docusaurus is open source. Docusaurus: Docs sites from Markdown, by Meta.
Are these GitBook alternatives open source?+
Docusaurus is under OSI-approved licenses. Outline (BSL-1.1) is source-available: free to self-host, with limits in the license.
Open source: OSI-approved license. Free to self-host: the code is public and free to run yourself, with limits in the license.