WHO WE ARE
The CAx Implementor Forum (CAx-IF) is a group of software developers and
testors working on Computer Aided Design (CAD) translators based on the ISO 10303 -- STandard for the Exchange of Product model data, STEP
(visit this ISO site for more
information on the STEP standard).
The CAx-IF is composed of CAD vendors and second or third party software
developers. For a list of current CAx-IF participants go to the Participating
This interoperability testing forum was started in February of 1995, and was
initially called Plugfest.
The participants in the original Plugfest were Dassault, Unigraphics, Intergraph,
Hewlett-Packard, MacNeal-Schwendler, Computervision, SDRC, Northrop-Grumman Data
Systems, Parametric Technology Corporation, STEP Tools Inc., and International
TechneGroup Incorporated. Plugfest was initially supposed to be a single event. However,
the value of this interoperability testing was immediately apparent and it was decided to
continue the testing in a distributed manner over the Internet. The group decided to call this
original testing forum STEPnet. From this forum a comprehensive infrastructure of
testing procedures, tools, and techniques has been established.
The prostep ivip Association, which was founded in 1993 to secure and carry on
the results of the ProSTEP research project, also started its RoundTable activities
with a number of CAD vendors in 1994, focused around the development of AP214. Here,
too, the initial testing evolved into an ongoing distributed forum to support both the
STEP processor developers as well as the standardization groups. With its about 200 members,
the prostep ivip Association was able to provide requirements and quality criteria to the
test forum, and in return prove the stability of the created processors in the Benchmarks,
eight of which were conducted between 1996 and 2003.
In 1999, PDES, Inc. and the prostep ivip Association combined their interoperability testing forums and called
it the CAx - Implementor Forum. In 2016, AFNeT joined the team in order to share their experience and
to support the extension of the CAx-IF to new domains, such as Computer Aided Engineering (CAE).
To date, the CAx-IF has completed 38 rounds of interoperability testing,
and has been in operation for over fiften years.
An article on the first ten years of CAx-IF testing
was published in prostep ivipís Product Data Journal.
Participants at the 1st CAx Implementor Forum in Darmstadt,
Participants at the 12th CAx Implementor Forum in Darmstadt,