pep8.org
PEP 8, for Humans.
Developing
If you serve this locally from 0.0.0.0, the fonts will display properly. They are blocked on all domains except 0.0.0.0 and pep8.org.
An easy way to do this:
$ python -m SimpleHTTPServer
Deploying
$ heroku buildpacks:set https://github.com/hone/heroku-buildpack-static.git