We’ve got several inquiries about our plans for Idubee spreadsheet component. I’m personally very glad that community is interested in the project and we’ll definitely continue improving the component.
To make long story short, we’re planning to develop a commercial Adobe Flex (3/4) component and open a free online spreadsheets service for everyone interested.
Check out the newer (but not the latest) version of Idubee spreadsheet application. While in editor, press CTRL+M to generate a column of 1000000 cells. As you’d see, perfomance of the component is not affected – it has constant rendering time regardless the amount of data.

Posting some links to old versions of our spreadsheet application (please. note that backend is disabled so many features not working)
This is really the first version of Idubee, more of prototype
