Over time we have written software related to data analysis / optimization that we made free to use. Below are the links to the corresponding sourceforge sites:
A python visualization module for gain- and lift-charts with a one line visualization function:
A similar python visualization module for linear and logistic regression:
A python module to convert general (with non-numeric columns) spreadsheet tables into purely numeric tables. Often needed for maschine learning
A fortran-95 module to calculate the L1-norm (robust) linear regression coefficients.
A fortran-95 library for genetic algorithms:
Fortran-95 wrappers for Michael Powells global optimization routines that do not use derivatives: