Arqiva is an extensible java based tool that allows you to write awesome API documentations without much effort using Markdown and HTML together.

Java 8 + Git + Maven 3.3.x
The start-project is a maven-project configured with the arqiva-maven-plugin which starts an embedded web-server to display our docs in a browser as we write them. It also allows to build our project into static html writing only 3 words.
git clone https://github.com/Emerjoin/Arqiva-start-project.git
mvn arqiva:run
INFO: Starting ProtocolHandler ["http-nio-9610"]
http://localhost:9610/arqiva/index.html
Created by Emerjoin