Hm, I guess the original Visicalc spreadsheet should run fine in dosbox. Visicalc was made available for free use and download by the original author. And it's a nice spreadsheet too! It's the 1981 version for the PC. (Strictly speaking the very original VC was the 1979 version that ran on Apple II. This was the killer application that started the whole computers-in-every-office explosion.)

http://www.bricklin.com/history/vcexecutable.htm