Mathematica
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Mathematical graphical capabilities allowed you to create two- and three-dimensional graphics, contour plots and density plots, all in exportable, publication-quality PostScript form. Most versions of Mathematica also support animation and sound.
In addition to using Mathematica's, many built-in functions, it was easy to define your own functions in Matheinatica's high-level programming language, which supported procedural, functional and rule-based programming styles. Almost every aspect of Matheniatica was under user control and Mathematica programs written on one computer system could be run on any other.
Wolfram Research. Inc.
$1,245
Academic and volume discounts were available.