The best free Documentation Generator alternative to GitBook is BookStack, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to GitBook and many of them are free Documentation Generators so hopefully you can find a suitable replacement. Other interesting free Documentation Generator alternatives to GitBook are Docusaurus, Read The Docs, MkDocs and Sphinx.
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.
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.
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.
Simple, powerful, and fast. Meet the modern SSG framework you've always wanted.
A documentation generator that builds HTML output based on Markdown files. Supports Markdown specs and offers a wide set of custom components using Markdown-like syntax. Builds Reference Source documentation for .NET projects (more added soon).
docsify generates your documentation website on the fly. Unlike GitBook, it does not generate static html files. Instead, it smartly loads and parses your Markdown files and displays them as website. All you need to do is create an index.
The most powerful development environment – now adapted for writing documentation.
Hyperbook is a quick and easy way to build interactive workbooks, that support modern standards and run superfast. It works by compiling markdown to static pages.
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is not like gitbook,is more another php site generate for a online book if you're a writter.