SciPy library main repository
QuTiP: Quantum Toolbox in Python
Composable transformations of Python+NumPy programs
Precision Trigonometry: Advanced Calculator for Complex Math
Object-oriented equation-based modelling and optimisation software
Software for electromagnetic simulation
Minfx optimisation library
numerical simulation code for solving transport equations in 1D/2D/3D
Modular System for Shelves and Coasts
Calculation with Clifford algebras: C++ library and Python module
Random phenomena generator
OpenNum lets you distribute solvers with a nice graphical interface
An extensible weather sensor recording network, based on Raspberry Pis
A package for scientific computing with Python
PyVE is image analysis and visualization environment
Dynamics of quantum systems, controlled by external fields
Python script (addon) for Blender to skin point cloud (verts to face).
statistical package designed for the end user, multiplatform