I’ve been using some of these a lot for some psychometrics software developmont work.

• TAM: Test Analysis Modules (3.3-10 released 2019-08-23)
• sirt: Supplementary Item Response Theory Models (3.7-40 released 2019-11-04)
• mirt: Multidimensional Item Response Theory (1.31 released 2019-09-15)
• eRm: Extended Rasch Modeling (1.0-0 released 2019-06-06)
• catR: Generation of IRT Response Patterns under Computerized Adaptive Testing (3.16 released 2018-07-28)
• mirtCAT: Computerized Adaptive Testing with Multidimensional Item Response Theory (1.9.3 released 2019-06-28)