[dr_doom]

Have you checked out Continuum's Wakari project.[1] It is essentially IPython with an online ide.

http://continuum.io/wakari.html

[arpineh]

I first mistook this for their other in browser data analysis environment: https://github.com/ContinuumIO/bokehjs

I have yet to test this, since it looks like early days yet.

Wakari is a cloud service and somewhat expensive for my needs. Though its hard to say how big an instance my data would actually require. If my Pandas experimentations don't pan out, I might have to give it a whirl.