DevTech's clients include U.S. and foreign government agencies, international development organizations, universities, and private-sector firms.

Representative clients include:

• Asian Development Bank (ADB)
• Academy for Educational Development (AED)
• Booz Allen Hamilton Inc.
• CH2M Hill
• Checchi Consulting Group
• Development Alternatives, Inc. (DAI)
• Federal Emergency Management Agency (FEMA)
• Federal Trade Commission (FTC)
• Florida International University
• Inter-American Development Bank (IDB)
• International City/County Management Association (ICMA)
• Louis Berger Group
• Lucent Technologies
• Oklahoma University
• Pan American Development Foundation (PADF)
• Research Triangle Institute (RTI)
• State University of New York (SUNY)
• United Nations Development Programme (UNDP)
• U.S. Agency for International Development (USAID)
• U.S. Department of Education
• U.S. Department of Energy
• U.S. Department of Justice
• U.S. Department of Labor (USDOL)
• U.S. Department of the Treasury
• United States Information Agency (USIA)
• U.S. Trade and Development Agency (USTDA)
• Waste Equipment Technology Association
• World Bank