VisiCorp

VisiCorp was an early personal computer software publisher. Its most famous products are Visi On and VisiCalc.

It was founded in 1976 by Dan Fylstra and Peter R Jennings as Personal Software, and first published Jennings' Microchess program for the MOS Technology KIM-1 computer, and later Commodore PET and Apple II versions. It later published a wider variety of games and some applications programs. In 1979 it released VisiCalc, which would be so successful that in 1982 the company was renamed "VisiCorp".