[pjc50]

> A browser will always have limitations and not quite reach the level of e.g. a TUI

There's no reason you can't jam a TUI into a browser. Perhaps to the surprise of both kinds of user, but it's possible.

> I think what the world need is a super fast native spreadsheet that is NOT Excel.

> I'd use that. But it needs to have a keyboard centric operation

You should boot up an emulator and check out the OG: Lotus 1-2-3. Keyboard driven, extremely fast, all written in 16-bit assembler for the original IBM PC running at, what, 4MHz?

It's because of Lotus 1-2-3's use of F2 for "edit cell" that F2 is still "edit" or "rename" in most applications.

(you can then continue the tour with WordPerfect and Borland Turbo Pascal, if you like light blue)