OpenGL Mathematics (GLM)
The Computational Geometry Algorithms Library
Google's software suite for combinatorial optimization
CUDA Templates for Linear Algebra Subroutines
Matlab toolbox for Geometry Processing
Computational geometry and spatial indexing on the sphere
C++ library for half precision floating point arithmetics.
fast C++ library for linear algebra & scientific computing
Open source finite element software for multiphysical problems
General Mission Analysis Tool
For exploring cellular automata like Conway's Game of Life.
2D & 3D TeX-Aware Vector Graphics Language
Numerical and Symbolic Math Tool
statistical tests & psuedo- random number generators (RNGs, PRNGs)
Framework for numerical computations, data analysis and visualisation
Command-line operators for netCDF and HDF files
System dynamics program with additional features for economics
Data Visualization and Analysis
fast C++ library for GPU linear algebra & scientific computing
MathMod is a mathematical modeling software