VisiCalc was the first spreadsheet program for personal computers. It was extremely successful, and pivotal as it was significantly responsible for moving personal computing out of the realm of hobbyists and in to the realm of serious business tools.
application suite that also included VisiWord, VisiFile, VisiSpell,
VisiTrend/Plot, and VisiTutor.
a GUI based environment. But that did not catch on. The similarly
named Visi On Calc spreadsheet is not at all related to VisiCalc, and later had to be renamed to Visi On Plan.