VisiCalc

VisiCalc was the first widely-used spreadsheet software, developed in 1979 for the Apple II computer. It allowed users to organize, calculate, and analyze numerical data in a grid format, resembling a digital paper spreadsheet. This innovation transformed how businesses handled financial modeling and data management, enabling quick calculations and easy updates. VisiCalc's success contributed to the popularity of personal computers, demonstrating their practical applications in everyday tasks. Its impact laid the groundwork for future spreadsheet programs, like Microsoft Excel, which continue to be essential tools in business and personal finance today.