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justincormack
The problem with spreadsheets is generally maintainability and testing not performance. At least if it is slow people might rewrite it on a better platform.

I am sure there is a market though.

karamazov
We're hoping that better performance will let users build well-designed spreadsheets - they'll be able to show more steps and use less archaic formulas without having to worry about slowdowns.
davidgerard
If you can speed up serious financial sector spreadsheets - hideous baroque constructions of formulae and VBA - they will pay you any amount of money for this.
Artemis2
How are you accelerating Excel so much, in a way that Microsoft wouldn't have thought about? No trashing, I'm just curious, and the website doesn't tell much apart from "demolishing the bottlenecks".
karamazov
We wrote a static optimizer for spreadsheets - this looks at the entire sheet and reduces computational complexity where it can.

Excel's built-in functions are optimized to run fast individually, not to work in concert. (Also, some of them are just slow for no good reason.)

Artemis2
That's an interesting approach, thank you!
[dead] dwash
OS X Numbers needs something like this. I use it for a few odd things and it is always so slow once you get a few hundred rows...