SC-IM is a spreadsheet program that is based on SC

Some of the features of SC-IM
 * UNDO / REDO.
 * 65.536 rows and 702 columns supported. (The number of rows can be expanded
  to 1.048.576 if wished).
 * CSV / TAB delimited file import and export.
 * XLS / XLSX file import.
 * Key-mappings.
 * Sort of rows.
 * Filter of rows.
 * Cell shifting.
 * 256 color support - screen colors can be customized by user, even at runtime.
 * Colorize cells or give them format such as bold or underline.
 * Wide character support. The following alphabets are supported: English,
   Spanish, French, Italian, German, Portuguese, Russian, Ukrainian, Greek,
   Turkish, Czech, Japanese, Chinese.
 * Implement external functions in the language you prefer and use them in SC-IM
 * Use SC-IM as a non-interactive calculator, reading its input from a external
   script.
 * More movements commands implemented !
 * Input and Output was completely rewritten

WWW: https://github.com/andmarti1424/sc-im