PeakFit was originally developed by Ron Brown of AISN Software and distributed by Jandel Scientific Software in the late 1980s but by January 2004, Systat Software acquired the exclusive worldwide rights from SPSS Inc. to distribute SigmaPlot and other Sigma Series products.
The company was started in 1968 when Norman Nie, Dale Bent, and Hadlai Hull developed and started selling the SPSS software.