Software is essential for research and practical applications of CAT. Here are some relevant programs. If you have something to add, please contact info@iacat.org.

CATSim – David J. Weiss
FireStar – Seung W. Choi
SimuMCAT – Lihua Yao
SimulCAT – Kyung (Chris) T. Han

Xcalibre – Dichotomous and polytomous models
IRTPRO – Vector Psychometric Group
Winsteps – The leader in Rasch analysis
ConQuest – from ACER

• Assess – open user access to create, publish, and manage CAT assessments
• Pearson VUE – content design, access and use mediated by vendor
• Prometric – content design, access and use mediated by vendor
• McCann – content design, access and use mediated by vendor
• LeaderAmp – mobile CAT and psychometrically calibrated eCoaching expert system
• LIVECAT – create and deliver CATs

• RSCAT – R package
• Concerto – University of Cambridge
• IRT-Computerized Adaptive Testing
• OSCATS – Open Source Computerized Adaptive Testing System