TSi has an extensive record of service to government and industry in advanced engineering research and development.

Government clients: The National Oceanic and Atmospheric Administration (NOAA), the Army Picatinny Arsenal, the US Mint, the NASA Glenn and Langley Research Centers, and the NASA Goddard Space Flight Center, the Air Force Office of Scientific Research, the Air Force RADC, Defense Advance Research Projects Agency (DARPA), SDIO/IST, the Army Research Office, the Army Communications Electronics Command, the Army Tank and Automotive Command, the NSWC David Taylor Naval Ship Research and Development Center, the Office of Naval Research, the Naval Research Laboratory, the Naval Ocean Systems Center, the Naval Air Engineering Center, NAVALEX, NAVAIR, the Department of Energy, the National Science Foundation.

Commercial clients: Bethlehem Steel Corporation, the Otis Elevator Company, Teleglobe International, SAIC, Sprint International, the Westinghouse Corporation, the Johns Hopkins University-Applied Physics Laboratory, the Electric Power Research Institute, IBM, MCI, Ameritech Services, Interstate Steel, and Dassault Aviation.

COSPAS-SARSAT clients: The Indian Space Research Organization , INTA - the Spanish Space Research Agency , the Norwegian Space Center , the Algerian Search and Rescue program , the Chilean Air Force , the Russian CMC ,the Italian Coast Guard , the US National Oceanic and Atmospheric Administration (NOAA), and the Korean Search and Rescue Program .