Scientific python packages

I use these packages regularly:

python 2.5 (http://www.python.org)
numpy (http://www.scipy.org/Download)
scipy (http://www.scipy.org/Download)
matplotlib (http://sourceforge.net/projects/matplotlib)
pyfits (http://www.stsci.edu/resources/software_hardware/pyfits/Download)
kapteyn (http://www.astro.rug.nl/software/kapteyn/)
mayavi2 ( http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/installation.html)
python-sao (http://code.google.com/p/python-sao/)
pymc (http://code.google.com/p/pymc/)