Btw. if you still want to go that route, I'd look into Docker. Basically you can give every paying user an isolated container where he's running his jobs. This has quite a few advantages:
- more secure, since processes are isolated.
- easily scalable, especially with their hipache router in front of it. Each process sees the same port internally, Docker manages the mapping from global ports to local ones, hipache manages failover / load balancing.
- easy to separate into base functionality / pro packages for your business model - have a base image and an extended one with all the packages.
Here's a referral link so you (and I) get more space for free: https://www.writelatex.com/signup?ref=64cf3f9ff138
BTW - lots of start-ups here in London trying to innovate around academia and research. Here's a post I recently wrote about the scene: http://freyfogle.tumblr.com/post/99273943690/thoughts-on-fut...
"you'll have to charge for access" -- I do not charge for access, though the whole site does cost a lot behind the scenes; it's just that you're not the one who has to pay (Disclaimer: I'm the founder.) Anyway, I hope you'll try it out and complain (email me at wstein@uw.edu and I can upgrade quotas on your project).
Also, SageMathCloud and IPython notebook both have similar functionality to the original posts site embedded in them. For example, here is the example of the OP but as a (public) Sage worksheet:
https://cloud.sagemath.com/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/files/support/latex-markdown-example.sagews
In SageMathCloud worksheets, when you render %md cells, it is done entirely client side (no roundtrip to server at all), so very fast. I'm not sure about IPython notebooks.People often say that. I find that assertion puzzling. I use LaTeX for hours everyday, so I think I exercise a lot of the functionality, but to install I just follow the brief directions on the TeX Live site (I don't use MiKTeX but I understand it to also install smoothly). Could I ask what part of the installation gives trouble?
I think texstudio is fairly similar to Kile you might want to give it a shot.