sc - 7.16-4.1 main

"Spreadsheet Calculator" is a much modified version of the public-
domain spread sheet sc, which was posted to Usenet several years ago
by Mark Weiser as vc, originally by James Gosling. It is based on
rectangular table much like a financial spreadsheet.
.
Its keybindings are familiar to users of 'vi', and it has most
features that a pure spreadsheet would, but lacks things like
graphing and saving in foreign formats. It's very stable and quite
easy to use once you've put a little effort into learning it.