Python code module for fixed point decimal calculations.

Provides multiprecision arithmetic functionality to Python programmers. [Open Source, LGPL]

Python package for numerical computation and plotting with a MatLab-like interface.

Collection of FORTRAN routines interfaced with NumPy. Provides interactive data analysis environment comparative to MATLAB, Octave, Scilab, etc. built on Python.

Date and Time types for Python. [Open Source]

NURBS algorithms in use for naval architecture.

A Python interface for the GNU scientific library. [Open Source, GPL/LGPL]

A free/open-source library for quantitative finance. [Open Source, BSD-like]

Open Source Library of Scientific Tools. SciPy supplements the popular Numeric module, gathering a variety of high level science and engineering modules together as a single package. Within SciPy are modules for graphics and plotting, optimization, integration, special functions, signal and image processing, genetic algorithms, ODE solvers, and others. [Open Source, BSD-like]