The Best GitBook Alternatives for Documentation & Publishing
GitBook is a powerful tool for building beautiful books using Git and Markdown, capable of generating static websites, PDFs, and eBooks. While its legacy version was open-source, development has ceased, leading many users to seek robust and actively maintained alternatives. If you're looking for a new platform to manage your documentation, create e-books, or build a knowledge base, you're in the right place.
Top GitBook Alternatives
Whether you need an open-source solution, a self-hosted option, or a specialized editor, there's a GitBook alternative out there for you. Let's explore some of the best:

BookStack
BookStack is an excellent open-source knowledge management application with a strong focus on ease of use. It's a fantastic alternative for creating and organizing documentation, knowledge bases, and notes. Being free, open-source, and available for Linux, Web, Self-Hosted, PHP, and Cloudron platforms, it offers great flexibility with features like Documentation, Knowledge base, Note Manager, Wiki, and WYSIWYG Support.

Sigil
Sigil is a multi-platform ebook editor specifically designed for creating and editing books in the ePub format. For those needing a dedicated tool for ePub content, Sigil is a free and open-source alternative available on Mac, Windows, Linux, and PortableApps.com, offering features like EPub content editing, Multiple languages, Portable functionality, and WYSIWYG Support, making it ideal for direct e-book creation.

Sphinx
Sphinx is a powerful, free, and open-source tool for creating intelligent and beautiful documentation. It's especially popular within the Python community but can be used for various documentation needs. Available on Mac, Windows, and Linux, Sphinx focuses on documentation and Python-related projects, providing a robust solution for structured content.

Read The Docs
Read the Docs is a free and open-source web platform that hosts documentation for the open-source community. It integrates seamlessly with Sphinx docs written with reStructuredText and can pull from various version control systems like Subversion, Bazaar, and Git. It's an excellent GitBook alternative for public-facing project documentation, particularly within the Python ecosystem.

mdBook
mdBook is a direct GitBook alternative written in Rust, offering a similar experience for creating online books from Markdown files. It's free, open-source, and available across Mac, Windows, and Linux. Its features include checking code snippets, generating documentation, and publishing, making it a fast and reliable choice for developers who prefer Rust-based tools.

Daux.io
Daux.io is a documentation generator that creates custom documentation on the fly using a simple folder structure and Markdown files. It's a free, open-source, and self-hosted solution that helps you create great-looking documentation with ease. Its Markdown support and PHP-based nature make it a lightweight and flexible option for many users.

Docsify.js
Docsify.js generates your documentation website on the fly, offering a different approach from GitBook which generates static HTML files. It smartly loads and parses your Markdown files, providing a dynamic and efficient experience. Docsify.js is free, open-source, and self-hosted, making it a great GitBook alternative for those who prefer JavaScript-driven, single-page application-style documentation.

Booktype
Booktype is a free and open-source platform designed to help you turn intellectual property into beautiful, professional books. Available on Mac and Linux, it stands out for its collaborative writing and publishing features, making it an excellent GitBook alternative for teams working together on book projects.

Leanpub
Leanpub is a commercial web-based platform that allows you to create, curate, edit, publish, and sell PDF/EPUB/MOBI books, often based on blog content. While not open-source, it's a powerful GitBook alternative for authors and publishers looking for a complete ecosystem to manage their book creation and sales process.
Choosing the right GitBook alternative depends on your specific needs, whether that's robust documentation features, dedicated ebook editing, collaborative writing, or a self-hosted solution. Explore these options to find the perfect fit for your next project!