Julia is a mix of Matlab, C and a typical scripting language (Perl, Python, Ruby....), wraps several numerical libraries (e.g. LAPACK for 'normal' matrices and SuiteSparse for sparse matrices, BLAS functions, PCRE for regular expressions...) and is prepared from its inception for painless running in parallel platforms. Its loaded with a ton of numerical functions (Bessels, Gammas, etc...) A good JIT compiler makes it run many numerical benchmarks almost as fast as compiled C or Fortran (see examples in the front page of http://julialang.org/), and also allows for many of the functions in Julia's standard library to be written in Julia instead of in C.
Julia is a Swiss knife for (numerical and scientific) programming in the making. It is open source and free and at present already runs in most platforms.