Sm3 is a project mainly written in Haskell, it's free.
Jacobi and conjugate gradients implemented in Haskell
An assignment for Numerical Methods subject in university I did in Haskell.
Solves linear equation systems of the form A x = b (A x = f) using Jacobi's and conjugate gradient methods.
A few more algorithms added. Simpson and Gauss quadrature numerical integration methods.