Irt
Information Resource Tracker (IRT) v.1.1.2
IRT was the once active port of IRM to Perl.
ResidPlots v.2.2.5.99
ResidPlots-2, is to provide a powerful tool for graphical residual analyses. ResidPlots-2 supports the most widely used IRT models including three dichotomous models (1PLM, 2PLM, 3PLM) and three polytomous models (GRM, GPCM, NRM).
HLM for Windows (Student Edition) v.6 8
The student edition can run all the analyses the full version can in terms of models selected, statistical options and output. Restrictions are, however, placed on the data used and the size of the model selected.
Libirt v.1.1.5
Library of functions to estimate the items and abilities from the responses of subjects to a questionnaire.
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