Sphinx

Sphinx is an open-source documentation generation tool widely used to create structured and beautiful documentation for software projects, most notably the official Python documentation. It takes plain text files written in reStructuredText and converts them into formats like HTML and PDF. It is the industry standard for managing Python project docs.

Sphinx was created by Georg Brandl and was initially released in 2007. It was originally built specifically to generate the official, highly organized documentation for the Python programming language. Since then, its robust features have led to its adoption by thousands of other open-source and proprietary software projects.

Sphinx uses reStructuredText (reST) as its primary markup language, which is a lightweight text format designed to be highly readable in its raw form. Users write their text in this markup, and Sphinx parses it to generate complex outputs like websites, PDFs, and ePub documents. It also supports powerful extensions to enhance formatting.

Yes, Sphinx is highly versatile and notable for producing output in HTML, PDF, ePub, and multiple other formats. To generate a PDF, Sphinx usually relies on a builder called LaTeX to compile the reStructuredText files. This allows developers to create professional, print-ready manuals from the exact same source files used for their web docs.