OpenGL Mathematics (GLM)
Google's software suite for combinatorial optimization
The Computational Geometry Algorithms Library
Matlab toolbox for Geometry Processing
CUDA Templates for Linear Algebra Subroutines
Computational geometry and spatial indexing on the sphere
fast C++ library for linear algebra & scientific computing
General Mission Analysis Tool
C++ library for half precision floating point arithmetics.
2D & 3D TeX-Aware Vector Graphics Language
For exploring cellular automata like Conway's Game of Life.
Open source finite element software for multiphysical problems
Numerical and Symbolic Math Tool
statistical tests & psuedo- random number generators (RNGs, PRNGs)
System dynamics program with additional features for economics
SigPack - A signal processing library using Armadillo
Data Visualization and Analysis
Android, UIQ 3.0, Series 60 Edition 5 open-source software
MathMod is a mathematical modeling software
Command-line operators for netCDF and HDF files
The package for statistical data analysis and applied mathematics