Adobe
AEC Info
Anheuser-Busch
ARC Advisory Group
Arizona State University
Ascension Systems
Aspen Technology Inc.
Atomic Enery of Canada 
Autodesk
AVEVA
Barloworld Logistics
Bechtel
Bentley Systems
BHP Billiton
Boeing Company, The
Broaddus & Associates
buildingSMART Alliance
Burns & Roe
BW Document Management Solutions
Carnegie Mellon University
CH2MHILL
Chevron
CII
City of Salisbury Fire Department
CMiC
COADE
ColumbiaSoft
Columbia University
Common Point
ConocoPhillips
Consolidated Contrators Company
Dassault Systemes
Design Atlantic
Design+Construction
DoallTech Co., Ltd
Dominion
Dow
Dow Jones
DPR Construction, Inc.
DuPont
e-Builder
Electric Power Research Institute
Emerson
ENR
ePM
Expert Choice

Facilities Solutions Group
Faithful + Gould
Fluor
GM
HATCH
Heller & Metzger
Honeywell
IBM
IMTI
Inmarsat
Innotec
Insight-WFP
Institute of Nuclear Power Operations
Intel
Intergraph
International Code Council
J.H. Findorff and Son, Inc
K. Hovnanian Homes
Kalido
KBR
Korea Institute of Construction Technology
Larsen & Toubro Infotech
LePatner & Associates LLP
Mackay Communications
McLaren Software
Meridian Systems
Metegrity
Mortenson
Mustang Engineering, L. P.
National Research Council Canada
NF Publishing Company
Nippon Sogo Systems, Inc
NIST
NoteVault
Noumenon Consulting
NRX Global
Octaga
OnTrack Engineering
ONUMA
Open Geospatial Consortium
Open Text Corporation
Oracle
OTA Diagnostics
PlantSuccess
PMA Consultants

POSC Caesar
Poyry Forest Industry
Praeses, LLC
Primavera
Quantapoint
S&B Engineers and Constructors
Shaw Group Inc., The
Siemens
Skanska
Skire
Smithsonian Institution
Software Innovation
Suncor
Sungkyunkwan University (SKKU) / University of Illinois at Urbana - Champaign
Swinerton
Target
Tekla
Texas A&M University
TradeFair Group
Trimble
U.S. Army ERDC-CERL
University Mechanical
University of Calgary
University of California, Berkley
University of Illinois at Urbana-Champaign
University of Kentucky
University of Nebraska (PKI)
University of Nebraska at Lincoln
University of North Carolina - Chapel Hill
University of Reading
University of Texas at Austin
University of Washington
Utility Engineering
Vela Systems
Victaulic
Vizada
VRContext
VTT
Xirrus
Zachry