I’ve just added GAUSS Mathematical and Statistical System to the page of data analysis tools for Mac OS X.

The GAUSS Mathematical and Statistical System is a fast matrix programming language widely used by scientists, engineers, statisticians, biometricians, econometricians, and financial analysts. Designed for computationally intensive tasks, the GAUSS system is ideally suited for the researcher who does not have the time required to develop programs in C/C++ or FORTRAN but finds that most statistical or mathematical “packages” are not flexible or powerful enough to perform complicated analysis or to work on large problems.