Some of the principals involved with the development were Larry Rosenfeld,[3] Avrum Belzer, Patrick M. O'Keefe, Philip Greenspun, and David F. Place.
[6][7][8] Further examples can be found in the presentations at the annual IIUG (International ICAD Users Group) that have been published in the KTI Vault[dead link] (1999 through 2002).
Market dynamics couldn't support this as there may not have been sufficient differentiating factors between ICAD and the lower-end systems (or the promises from Dassault).
KTI was absorbed by Dassault Systèmes and ICAD is no longer considered the go-forward tool for knowledge-based engineering (KBE) applications by that company.
Dassault Systèmes is promoting a suite of tools oriented around version 5 of their popular CATIA CAD application, with Knowledgeware the replacement for ICAD.
The Genworks GDL product (including kernel technology from the Gendl Project) is the nearest functional equivalent to ICAD currently available.
ICAD provided a declarative language (IDL) using New Flavors (never converted to Common Lisp Object System (CLOS)) that supported a mechanism for relating parts (defpart) via a hierarchical set of relationships.
One role for ICAD may be serving as the defining prototype for KBE which would require that we know more about what occurred the past 15 years (much information is tied up behind corporate firewalls and under proprietary walls).