Telecommunications
- Bell Atlantic
- Lucent Technologies
- MCI
- ShareMedia
- Tele-TV Systems
Defense Contractors
- BDM
- Computer Sciences Corporation (CSC)
- Litton/PRC
- Lockheed Martin
- LORAL Systems
- Northrop Grumman
- Behavioral Research Incorporated
- DietFit
- First Coast Service Options
- GlaxoSmithKline
- Lippincott Williams & Wilkins
- Organization Wellness & Learning Systems
- Parke-Davis
- Pfizer
- Talisman
- University of Sciences in Philadelphia
- U.S. Pharmacopeia
International
- United Nations Development Programme (UNDP)
- United Nations Industrial Development Organization (UNIDO)
Training Companies
- American Society for Training & Development (ASTD)
- Berlitz
- Brightline Compliance
- Christensen/Roberts Solutions
- Delmar Publishing
- Editorial Experts Harrington Software Associates Inc. (EEI)
- Human Resources Research Organization (HumRRO)
- Management Concepts
- PBS: The Business Channel
- Williams Learning Network
Non-Profit
- Alexandria Chamber of Commerce
- Alexandria Convention & Visitor's Association (ACVA)
- Alexandria Economic Development Partnership
- American Association for the Advancement of Science (AAAS)
- American Red Cross
- Annenberg/CPB Project
- Anxiety Disorders Association of America
- Association for Supervision and Curriculum Development (ASCD)
- Celebrate Fairfax
- Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD)
- Envelope Manufacturer's Association
- Good Samaritan Foundation
- Northern Virginia Regional Commission (NVRC)
- Reading is Fundamental (RIF)
- World Wildlife Fund (WWF)
Media
Retail
- Arlington Transportation Partners
- DASH Bus
- First Transit
- Metropolitan Washington Airports Authority (MWAA)
- Metropolitan Washington Area Transit Authority (Metro)
- Metropolitan Washington Council of Governments (COG)
- Northern Virginia Transportation Commission (NVTC)
- Potomac and Rappahannock Transportation Commission (PRTC)
- Pulsar Advertising
- Travesky & Associates
- Virginia Department of Transportation
Professional Services
- American Management Systems (AMS)
- Aspen Systems
- Claritas
- Datatel
- Deloitte Consulting
- Eastman Chemical
- Florida Power & Light
- Hewlett-Packard
- IBM
- Litton/PRC
- Pitney Bowes
- Vigilant Services
Financial Services
- Alliant Merchant Services
- Arthur Andersen
- Campbell & Associates
- Dreyfus
- TRW
Colleges & Universities
- George Mason University
- Marshall University
- Mary Baldwin College
- Roanoke College
- University of Virginia
