Prism

GraphPad Prism is a powerful combination of basic biostatistics, curve fitting and scientific graphing in one comprehensive program. More than 100,000 scientists in over 100 countries rely on Prism to analyze, graph and present their scientific data.What makes Prism the program of choice for many of the world’s leading universities, medical centers, research institutes and pharmaceutical companies? Prism certainly has all the capabilities you would expect from a top notch scientific graphics program, but what makes Prism truly unique is not what it does, but how it does it. Designed for the practical scientist, Prism does not expect you to be a statistician. It guides you through each analysis - giving you as much help as you need - and tracks and organizes your work like no other program available. You can concentrate on your data, not fight with your software. (Source: http://mathres.kevius.com/software.htm)