SageMathCloud (https://cloud.sagemath.com https://cloud.sagemath.com) provides a LaTeX editor "with all packages and everything", coupled with a full Linux shel

SageMathCloud (https://cloud.sagemath.com https://cloud.sagemath.com) provides a LaTeX editor "with all packages and everything", coupled with a full Linux shell, 5GB disk space, and 100% customizable compilation process. "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.