MLE++ and MLEQuick (Cahill Software)

Cahill Software offers MLE++, a C++ class library for maximum likelihood estimation. This offers greater flexibility than "canned" routines. They also offer a menu driven package, MLEQuick, for "discrete dependent variable models, censored and truncated models, and survival analysis." Finally, Cahill Software can be hired for contract programming, with a specialty in "statistical estimation programs and simulation models."