vielleicht ist hier was für dich dabei?
https://jspreadsheets.com (html5/javascript-basierte spreadsheets)
ansonsten mal hier lesen:
https://apple.stackexchange.com/questions/66214/are-there-any-free-and-lightweight-spreadsheet-programs-for-the-mac
ansonsten mal hier lesen:
https://apple.stackexchange.com/questions/66214/are-there-any-free-and-lightweight-spreadsheet-programs-for-the-mac