This is great, except it seems Windows only. I'm guessing because of the VB scripting compatibility? It seems scary that Microsoft still has such dominance in spreadsheets still. OSX has Numbers? Linux has.... LibreOffice?
As a matter of fact, if someone owns the system, competing on equal terms (or at all) is impossible. Re: the Linux, it's tempting for a couple of reasons,
but potential user base seems to be a problem (at the moment).