High Level Programming Language/Numerical Analysis Software

Scilab is a scientific software package for numerical computations providing a powerful open computing environment for engineering and scientific applications which includes hundreds of mathematical functions with the possibility to add interactively programs from various languages (C, C++, Fortran...). It has sophisticated data structures (including lists, polynomials, rational functions, linear systems...), an interpreter and a high level programming language. Matlab and Maple files can be converted.