- U.S. Navy
- U.S. Air Force
- U.S. Marine Corps
- U.S. Coast Guard
- U.S. Army
- Defense Electronic Supply Center
- Federal Aviation Administration
- National Weather Service/NOAA
- Raytheon Company
- Lockheed Martin
- L-3
- BAE Systems
- General Dynamics
- AAI/Systems Management Inc.
- American Cyanamid
- Kansas City Power & Light
- Tybrin Corporation
- British Petroleum Company
- American Airlines
- Tano Corporation
- Florida Department of Transportation
- Korean Meteorological Agency
- Scientific Research Corporation (SRC)
- Taos Industries
- Advanced Navigation and Positioning Corporation (ANPC)
- Litton Integrated Systems Division
- Austrian Aerospace
- Defense Supply Center, Richmond
- Hindustan Aeronautics Limited
- Canadian Armed Forces
- Elettronica Italy
- National Radio Astronomy Observatory
- Gulf Power Company
- TRW
- Singapore Technologies Engineering Ltd.
- Argonne National Laboratories
- Bharat Electronics
- Centre for Airborne Systems (CABS)
- Harris Corporation