Slate API Docs Generator!

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.

Swagger is an open source RESTapi Documentation Tool.

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.

Quote from the Author: "Wikitten is a small, fast, PHP wiki that I made because I really needed a place to store my notes, snippets, ideas, and so on. I've tried a lot of personal wikis and note-taking applications in the past, but since I have peculiar needs, none of them really suited me, so I rolled my own. "

ApiGen is the tool for creating professional API documentation from PHP source code, similar to phpDocumentor 2 .

DoxyS is a code documentation tool for C++/C. DoxyS strives to yield a very professional looking output, presenting the the code in a structured easy to navigate set of HTML pages. Easy to use: Just navigate to the root of your code directory and type doxys.

ReadMe is a developer hub for your startup or code.

Sandcastle produces accurate, MSDN style, comprehensive documentation by reflecting over the source assemblies and optionally integrating XML Documentation Comments. Sandcastle has the following key features:

NDoc generates class library documentation from .NET assemblies and the XML documentation files generated by the C# compiler (or with an add-on tool for VB.NET).

Natural Docs is an open-source documentation generator for multiple programming languages. You document your code in a natural syntax that reads like plain English. Natural Docs then scans your code and builds high-quality HTML documentation from it.

CppDoc generates HTML documentation for C++ classes, based on your source code and special comments embedded within it. It can produce output that is very similar to the output of Javadoc, and it supports Javadoc tags such as @see, @return , etc. The documentation comments are optional; if you leave them out, CppDoc will still generate a full set of documentation based on class relationships and hierarchy.

Javadoc is a tool from Sun Microsystems for generating API documentation in HTML format from doc comments in source code.

Document! X is a 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, XSD Schemas, COM Components and Type Libraries, Java and Javascript.