Implementation for 101Companies, see http://101companies.org/wiki/Contribution:bottle for details.
You will need Python 3 to run this contribution at all. If you are on a Unix system (e.g. Linux or Mac OSX), chances are that you already have it installed. The program will probably also appear to run with Python 2, but it'll start choking on strings coming from the web UI and blow up eventually.
You will also need Bottle and PyYAML. Those can probably be installed with your distribution's package manager or Python's package manager pip.
To ensure everything works, cd into this project's folder and run test101.py. This will test all available features and report the result.
To run the most interesting feature of this contribution, namely the web UI, once again cd into the project's folder, run bottle101.py and then point your browser to http://localhost:3000/, with JavaScript enabled.