+ http://readthedocs.org is a documentation hosting service based around Sphinx.
+ They will host sphinx documentation, along with supporting a number of other
+ features including version support, PDF generation, and more. The `Getting
+ Started <http://read-the-docs.readthedocs.org/en/latest/getting_started.html>`_
+ guide is a good place to start.
There's a third-party extension providing an `api role`_ which refers to
Epydoc's API docs for a given identifier.