The kinds of people who need to calculate things span a surprisingly large range. And that range is an ever-increasing one. It started off with scientists and engineers. Now, it includes financial analysts, people in medical research, social sciences and life sciences. A lot of students also use it—from graduate school down to high school.

Technical professionals and students are the core market for Mathematica. There are probably about four million technical professionals in the US. Unexpected groups of users also have cropped up. For example, Mathematica can generate fairly spectacular computer graphics. It’s growing in popularity in the computer art and design community.