I suspect Emacs could be convinced to do this. Right now there's the Simple Emacs Spreadsheet which uses elisp as a formula language and has a grid view, but I

I suspect Emacs could be convinced to do this. Right now there's the Simple Emacs Spreadsheet which uses elisp as a formula language and has a grid view, but I can't imagine shelling out to alternative interpreters would be beyond the wit of man.