MkDocs is static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file.

Doxide is described as 'Documentation generator for C++. It alternative to Doxygen that aims at a more modern look and feel, with responsive design for desktop and mobile devices' and is a documentation generator in the development category. There are five alternatives to Doxide for a variety of platforms, including Mac, Windows, Linux, Self-Hosted and Python apps. The best Doxide alternative is MkDocs, which is both free and Open Source. Other great apps like Doxide are Doxygen, Sphinx, Daux.io and DocFX.
MkDocs is static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file.

Doxygen is a tool for generating documentation from annotated C++ sources, as well as other popular programming languages like C, Objective-C, C#, PHP, Java, Python, IDL (CORBA, Microsoft, and UNO/OpenOffice flavors), Fortran, VHDL, Tcl, and to some extent D.


Sphinx is a tool that makes it easy to create intelligent and beautiful documentation, written by Georg Brandl and licensed under the BSD license.

Daux.io is a documentation generator that uses a simple folder structure and Markdown files to create custom documentation on the fly. It helps you create great looking documentation in a developer friendly way.




DocFX generates Documentation directly from source code (.NET, RESTful API, JavaScript, Java, etc...) and Markdown files.