Computational geometry and spatial indexing on the sphere
Google's software suite for combinatorial optimization
OpenGL Mathematics (GLM)
Matlab toolbox for Geometry Processing
The Computational Geometry Algorithms Library
CUDA Templates for Linear Algebra Subroutines
fast C++ library for linear algebra & scientific computing
For exploring cellular automata like Conway's Game of Life.
2D & 3D TeX-Aware Vector Graphics Language
Basic matlab-like api for reading a joystick in GNU Octave
parser of string expressions like sin(pi/4), functions x0+2*sin(pi*x)
General Mission Analysis Tool
C++ library for half precision floating point arithmetics.
Open source finite element software for multiphysical problems
System dynamics program with additional features for economics
Numerical and Symbolic Math Tool
statistical tests & psuedo- random number generators (RNGs, PRNGs)
fast C++ library for GPU linear algebra & scientific computing
C++ header-only library that simulates GLSL math
Uranie is CEA's uncertainty analysis platform, based on ROOT
Android, UIQ 3.0, Series 60 Edition 5 open-source software
Data Visualization and Analysis