Resolver One looks and feels like an Excel clone, except that it stores all the data and formulas as a Python program. You can add more code, or export the whole thing. It's in public beta now, and the commercial release will be free for open source and personal projects.
Augmented Maps: dynamic, paper-based displays.
A Bright, Shiny Service: Sparklines A web service implementation of Edward Tufte’s sparklines idea, in Python.