and Freelance ...
Lotus 1-2-3 was the reason my sandwich year saw me going from a department of 1 PC between 60, to 15 in a year. Nearly all to run 1-2-3.
Before then we needed a "Y" cable to the Sperry mainframe to drive a HP4540 plotter in a n hour.
After you could plot a graph in less time than it took to make a coffee.