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Visi On (also known as VisiOn) is a graphical user interface (GUI)-based operating environment program for IBM compatible personal computers running MS-DOS. Visi On was developed by VisiCorp. It was one of the first GUIs on a personal computer. Visi On was never popular, as it had steep minimum system requirements for its day, but it was influential in the development of later GUIs like Microsoft Windows.
VisiCorp had programs for sale that were compatible with VisiOn, including a spreadsheet program called "VisiOn Calc". (Not to be confused with VisiCalc).
One of Visi On's features was an hourglass cursor that indicated when the system was loading data from a disk. At the time, most software would display words on the screen like "busy" or "please wait" instead.

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