Hi Edward. I have happily used: http://www.sagemath.org/ https://cloud.sagemath.com/ in some teaching of python. The benefits are well explained here: http://www.sagemath.org/library-why.html sagemath solves all dependencies and the student are "ready" to go from the start. William Stein has done a very beautiful job. http://wstein.org/ Then I was wondering if relax should establish a "try-out" in the cloud? Code and installation http://doc.sagemath.org/html/en/installation/ https://github.com/sagemath/sage The prizing for the cloud service is here: https://cloud.sagemath.com/policies/pricing.html That is a little spicy. An optimal solution would be to find some scientific servers, which we could talk into this. What do you think?