Gmm++ is a generic c++ template library for sparse, dense and skyline matrices. it is built as a set of generic algorithms for any interfaced vector type or matrix type. it can be view as a glue library allowing cooperation between several vector and matrix types. basic sparse, dense and skyline matrix/vector types are also built into gmm++, so it can be used as a standalone linear algebra library.

homepage: http://home.gna.org/getfem/gmm_intro