Scisoft is a project started at the European Southern Observatory. It was created to provide a uniform software distribution of astronomical data reduction and analysis software at all of ESO’s observatories.
Scisoft OSX, while not an ESO project, is similar in spirit. It is meant to be a quick way to install many of the most used data reduction packages on a new Mac running Mac OSX.
The core packages included in Scisoft OSX are IRAF, Pyraf, MIDAS, Python and Python extensions.