Blas
CPPLapack v.2010.03.27
CPPLapack is a c++ class wrapper for BLAS and LAPACK.
Dlib C++ library v.17.46
Dlib is a general purpose cross-platform C++ library designed using contract programming and modern C++ techniques.
CPPScaLapack v.2004.01.31
CPPScaLapack is a C++ class wrapper for PBLAS and ScaLAPACK with MPI.
FLENS v.1.0
FLENS (Flexible Library for Efficient Numerical Solutions) is a C++ library for scientific computing.