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 a website. To start using it, all you need to do is create an index.html and deploy it on GitHub Pages.

Express.js is a simple Node.js framework for single, multi-page, and hybrid web applications.

Documentation themes are built specifically for writing technical and product documentation. They are normally written and maintained in Markdown. The often include a navigation menu, search bar, clear headings, semantic document structure and clean typography.