Document! X is described as 'Combination of an automated documentation tool and a full authoring environment which can be used to create, publish and maintain accurate, professional quality documentation for .NET, Web Services, Databases, XSDs, Java ,Javascript' and is an app in the development category. There are more than 10 alternatives to Document! X for a variety of platforms, including Windows, Linux, Mac, BSD and Self-Hosted apps. The best Document! X alternative is Doxygen, which is both free and Open Source. Other great apps like Document! X are Slate API Docs Generator, NDoc, Natural Docs and Javadoc.