Thanks @Merv! Is there any documentation on how to interface with the IO using Python, etc?

I love the idea of UniPi, but I'm somewhat unclear about what the "Open Source" software option means. Am I able to write custom software (let's say with Python) on the Pi to utilize the IO provided by the UniPi, or do I have to install Evok and then interface using a Web Socket, etc? And, just to verify, Evok is a software application, not a custom Linux distro, right?

Thanks in advance!