RubyMadScience Class Software
RubyMadScience was courseware, tracking steps taken in learning various topics. At this point it's shut down - maintaining anything that sends email on the internet makes it a spam magnet, even if you're careful not to let it be usefully abusable.
For how this software was initially written, step by step, see https://codefol.io/tags/rubymadscience
Honeycomb Support
This app is instrumented with Honeycomb.
Self note: https://ui.honeycomb.io/codefol.io/home/rubymadscience
License
RubyMadScience uses a browser theme adapted from Creative by Start Bootstrap. Code derived from Creative, including app/view/layouts/application.html.erb and app/view/shared/_navbar.html.erb, are licensed as Apache 2.0.
In the public/img directory are a number of photos of stuffed animals, puppets, etc, which are licensed as CC-attribution-noncommercial and Copyright (C) Noah Gibbs.
The remainder of RubyMadScience is licensed under the MIT license.