Template-driven engine to generate documentation
API Documentation Browser
The Express.js Website
Static site generator for .NET API documentation
WackoWiki is a light and easy to install multilingual Wiki-engine.
RESTful web API documentation Generator
Easily Create Professional Online FAQs, Documents, Books, Manuals etc.
ASoulDocs is a stupid web server for multilingual documentation
The Extended Natural Docs Package
MS Word / HTML to CHM / Web Help converter
Writing use cases
CrowdDoc provides a context-driven documentation from the web