Digital spreadsheets are perhaps the most powerful and influential developments of technology of the last century and through today.

Take stock of their reach: Big or small, virtually all businesses use them. A huge number of individuals use them, often without realizing it. Something about you is in a spreadsheet somewhere.

Entire industries were founded on the back of digital spreadsheets, especially in the finance sector. And the financial sector run so much.

VisiCalc was the killer app for the Apple II before there were “killer apps.” We wouldn’t have the behemoth of modern-day Apple without without software. And all in a microscopic 32k of memory.

What will you accomplish with an effective spreadsheet?