This doesn't really fit in anywhere that I could find, but I have been very impressed w/ Jupyter Notebook. It's a latter-day scientific notebook which provides an opensource alternative to Wolfram's Mathematica.
Very good article on it recently in _The Atlantic_:
https://www.theatlantic.com/science/...solete/556676/
Google has a server up:
https://colab.research.google.com/no.../welcome.ipynb and I've begun using it as a notebook for CNC machining.
Curious if anyone else had occasion to try it.