(disclaimer: I'm the founder of SageMath and SageMathCloud) People keep asking me about the comparison. Wolfram Programming Lab does indeed appear to be simila

(disclaimer: I'm the founder of SageMath and SageMathCloud) People keep asking me about the comparison. Wolfram Programming Lab does indeed appear to be similar in some ways to SMC/Python/Jupyter Notebooks. I think SMC/Python/Jupyter is a better choice for college teaching because (1) the healthy and rapidly growing and improving open source ecosystem, (2) that Python is also useful for a huge amount outside of mathematics, (3) SMC is cheaper than Wolfram Programming Lab and of course Python is free forever, (4) SMC has realtime collaboration (multiple people editing the same doc at once), history recording of all edits, and better snapshots, where Wolfram doesn't have any of that, (5) SMC supports a full Unix shell, anything you can install there, and also LaTeX, (6) the course management in SMC is much more developed.