Software

NUMBERS - A number theoretic calculator
Aliquot - A tool to compute aliquot sequences
Grobian - A toolkit for rough set data analysis (Günther Gediga, Ivo Düntsch)
LCABIN - Latent class analysis (Günther Gediga, Ivo Düntsch)
NOO - Approximation quality for sorting rules (Günther Gediga, Ivo Düntsch)