Toolboxes for SPM (http://www.fil.ion.ucl.ac.uk/spm/) developed at Freiburg Brain Imaging (http://fbi.uniklinik-freiburg.de/)
Perl module for reading/writing QuickBooks IIF files.
GPTIPS is a genetic programming (GP) tool for use with MATLAB aimed at evolving empirical non-linear symbolic models from data. It can evolve "multigene models". These are often more accurate, transparent and compact than models evolved by standard GP.
OpenOpt is FREE (GNU GPL v.2) MATLAB/Octave toolbox, powered by user-contributed solvers & ideas. Scaling, updating counters etc is performed by OpenOpt BaseModule. Local & global solvers, easy interface, possibility of graphical output, etc, etc. Enjoy