The best open source alternative to GitBook is BookStack. If that doesn't suit you, our users have ranked more than 50 alternatives to GitBook and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to GitBook are Sigil, Foam, DokuWiki and Wiki.js.
BookStack is a free and open source knowledge management platform built on PHP. The system has been built around simplicity to ensure that adding information to it is not a chore. The content structure is built on the metaphors of Books, Chapters & Pages.
Sigil is a multi-platform ebook editor. It is designed to edit books in ePub format.
Foam is a personal knowledge management and sharing system inspired by Roam Research, built on Visual Studio Code and GitHub.
DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain readable outside the Wiki and...
Write your content in the widely used and simple Markdown format, using the built-in visual editor. Unlike other wiki software that save content in a database with a difficult to extract format, Wiki.js saves all your content directly into Markdown (.
Docusaurus is a project for easily building, deploying, and maintaining open source project websites.
Read the Docs hosts documentation for the open source community. It supports Sphinx docs written with reStructuredText, and can pull from your Subversion, Bazaar, Git, and Mercurial repositories. The code is open source, and available on github.
Quartz is a set of tools that helps you publish your digital garden and notes as a website for free. Quartz v4 features a from-the-ground rewrite focusing on end-user extensibility and ease-of-use.
MkDocs is static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file.
Sphinx is a tool that makes it easy to create intelligent and beautiful documentation, written by Georg Brandl and licensed under the BSD license.
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is not like gitbook,is more another php site generate for a online book if you're a writter.