Retype is described as '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)' and is an app in the Development category. There are more than 25 alternatives to Retype for a variety of platforms, including Linux, Self-Hosted solutions, Mac, Windows and Online / Web-based. The best alternative is BookStack, which is both free and Open Source. Other great apps like Retype are Archbee (Freemium), GitBook (Freemium), Read The Docs (Free, Open Source) and Sphinx (Free, Open Source).
hexo-theme-doc is a documentation theme for Hexo, the fast and powerful blog framework powered by Node.js. It differs from other Hexo themes by allowing you to present documentation—especially REST API documentation.
ditto inspired by flatdoc is a markdown code documentation system, capable of producing documentation similar to Three.js and Backbone.js, check out live demo here. It is designed for people who use Github Pages to host their code documentation, but you can also host it yourself.
Create powerful beautiful documentation, hassle-free. DeveloperHub is hosted documentation portals service for Product and API Docs. Write your user guides, knowledge base, API and product documentation.