The Flex equivalent of Microsoft Office or Google docs is pretty much complete - there's Buzzword for documents, SlideRocket for presentations, and now idubee for online spreadsheets.

idubee has support for formulas, keyboard navigation much as you'd expect from a real office program.
Unfortunately for now the application is simply a personal R & D project with no plans on making it a commercial offering.
Too bad, because this looks like it has some potential.
You can register for your free account, but be warned: this application has the strangest user agreement I've ever seen.
Comments
Don't forget blist for
Don't forget blist for databases!
Hi, I'm actually Idubee
Hi, I'm actually Idubee developer. We have started development of the next version which will be commercial product (main improvments are in performace, calculations - Idubee now supports millions of cells with virtually unlimited number of rows and cells)
New version is not rolled out to the server but I could send stripped down version if anyone is interested - just drop me a line: andriyo at gmail.com
what about blist :)
what about blist :)
This looks very promising!
This looks very promising!
It would be nice to see a live release, mostly since this should also work offline, something that blist wouldn't be able to do.