Xcalibre 4: User-Friendly Item Response Theory
Xcalibre 4 is a revolutionary system to perform IRT analyses through a user-friendly interface (no command code), producing automatically built narrative reports with embedded tables and graphics. More information is available here.
Purchasing Xcalibre 4
Xcalibre 4 has been retired, and is no longer being sold although we will continue to support existing users. The next generation of Xcalibre will be released in September 2018, and will be a cloud-based software as a service (SaaS); this allows a number of advantages, including easier updates, no local installations on Windows, support for non-Windows users, and better performance.