MV++ is a small, efficient, set of concrete vector and simple matrix classes for numerical computing. Find MV++ at: http://math.nist.gov/mv++/
A reusable iterative optimization library for combinatorial problems with fuzzy constraints Find StarFLIP++ at: http://www.dbai.tuwien.ac.at/proj/StarFLIP/
an interactive quaternion fractal viewer Find Quaternion Fractal Explorer (QFE) at: http://www.theory.org/software/qfe/
IML++ is a C++ templated library of modern iterative methods for solving both symmetric and nonsymmetric linear systems of equations. Find IML++ at: http://math.nist.gov/iml++/
PETSc is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. Find PETSc at: http://www-fp.mcs.anl.gov/petsc/
Iterates self-referential logical systems, and outputs a png file showing the dynamics of the system. Find Dynamical Semantics Software at: http://www.theory.org/fracdyn/dynsem/software.html
The HUGE-FLOAT package. It’s for computations with very long (huge!) floating point numbers. With hfloat you can compute pi to several million digits. Find HFLOAT at: http://www.jjj.de/hfloat/
Expression Templates for Partial Differential Equations Find EXPDE at: http://www10.informatik.uni-erlangen.de/~pflaum/expde/Expde_Homepage.html
