AccessGrid ( http://www.accessgrid.org/ ) The Access Grid is an ensemble of resources including multimedia large-format displays, presentation and interactive environments, and interfaces to Grid middleware and to visualization environments. These resources are used to support group-to-group interactions across the Grid. GUI and main program written in Python 2.3 with wxPython 2.6 and Tcl/Tk Aqua 8.4.9.
I didn't mean that all of the GSEC exam items were like that. In fact, I've heard that the GSEC exam has been considerably improved over the past few years. I've was able to thumb through the first book of the SANS GSEC class, and the body of knowedge just in that book alone is imperssive. One of the biggest frustrations I have with classic Mac OS is the completely braindead way it handles memory. In most operating systems, a program grabs and releases memory as it needs it using a either a nasty old Unix kernel call named malloc or some modern equivalent that does the same thing.
BioImageXD ( http://www.bioimagexd.net ) Free, open source software for 3D visualisation processing, and analysis of multidimensional biomedical image data, especially microscopy. GUI and main program written in Python/wxPython on top of python wrapped c++ libs VTK and ITK
BitPim (http://www.bitpim.org) is a program that allows you to view and manipulate data on many CDMA phones from LG, Samsung, Sanyo and other manufacturers. BitPim is developed in wxPython by Roger Binns.
BitTorrent (http://www.bittorrent.com) is the famous peer-to-peer file sharing application, developed in wxPython by Bram Cohen.
Blender - http://www.blender3d.org/
/Blender, the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback. Embeds Python as its scripting language.
Brainworkshop - http://brainworkshop.sourceforge.net/
A Dual N-back training program
CASA https://wikio.nrao.edu/bin/view/Software/ObtainingCASA
The Common Astronomy Software Applications (CASA) are a suite of tools for the reduction and analysis of radio-astronomy data. The primary user interface is via an extended IPython shell, with GUI components in Qt. All command.