Sphinx is a documentation generator tool. It generates it from reStructuredText sources, but can also generate API pages using autodoc extension. Sphinx is extensible, supports multiple output formats and custom themes for generated HTML.
Sphinx Themes
A list of notable Sphinx Themes:
Alabaster by bitprophet
- Based on: Kr by kennethreitz
Examples: http://www.fabfile.org/, http://www.paramiko.org/
- BSD License
Read the Docs by snide
- Mobile Friendly
Examples: http://doc.pypy.org/en/latest/
- MIT License