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Entropy is a program that will calculate the entropy of a given set of data. This program is mainly used to benchmark the efficiency of existing or developing compression algorithms.

clFFT a software library containing FFT functions written in OpenCL clFFT is a software library containing FFT functions written in OpenCL. In addition to GPU devices, the libraries also support running on CPU devices to facilitate debugging and heterogeneous programming.

Diehard is a battery of tests for random number generators developed by Dr. George Marsaglia of Florida State University Department of Statistics. Originally developed for testing pseudo-random generators, Diehard has since become a de facto standard for testing RNGs.

A compiler which allows to typeset geometry figures within a (La)TeX document. This program is also useful to convert such figures in EPS format or in various other vector graphic formats.

PDL (``Perl Data Language'') gives standard perl the ability to COMPACTLY store and SPEEDILY manipulate the large N-dimensional data arrays which are the bread and butter of scientific computing. The idea is to turn perl in to a free, array-oriented, numerical language in the same sense as commerical packages like IDL and MatLab. One can write simple perl expressions to manipulate entire numerical arrays all at once. For example, using PDL the perl variable $a can hold a 1024x1024 floating point image, it only takes 4Mb of memory to store it and expressions like $a=sqrt($a)+2 would manipulate the whole image in a few seconds. A simple interactive shell (perldl) is provided for command line use together with a module (PDL) for use in perl scripts.

KCalc is a calculator which offers many more mathematical functions than meet the eye on a first glance. Please study the section on keyboard accelerators and modes in the handbook to learn more about the many functions available.

Qalculate! is a multi-purpose desktop calculator. It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface.

Cantor is a KDE Application aimed to provide a nice interface for doing mathematics and scientific computing. It doesn't implement its own computation logic, but instead is built around different backends.

The rpn function will take a scalar or list of sclars which contain an RPN expression as a set of comma delimited values and operators, and return the result or stack, depending on context.

Number::Misc provides some miscellaneous handy utilities for handling numbers. These utilities handle processing numbers as strings, determining basic properties of numbers, or selecting a random number from a range.