Multivariate Software

EQS - Structural Equation Modeling Software

EQSIRT Item Response Theory Software



 After 25 years, Multivariate Software is now closed.
EQS & EQSIRT are currently not available for purchase.
We thank our customers for their many years of support.

As a sign of goodwill, Eric Wu will provide licensed users
with technical support for a limited period of time.
He can be reached at

If you are interested in purchasing the intellectual property
of EQS and/or EQSIRT, or for all other questions,
contact Peter Bentler at