GMT has a long history of being a preferred supplier to many of Australia's largest and most significant organisations including:

• Acuity Consulting
  
• AirServices Australia
  
• AUSAID
  
• Austrade
  
• Australian Communications and Media Authority
  
• Australian Electoral Commission
  
• Australian Federal Police
  
• Australian Taxation Office
  
• Banyule City Council
  
• BHP Billiton
  
• Boeing Australia
  
• Byron Bay Shire Council
  
• Centrelink
  
• Child Support Agency
  
• CITEC
  
• City of Whittlesea
  
• Civil Aviation Safety Authority
  
• Crimtrac
  
• CSIRO
  
• Defence Housing Authority
  
• Department of Education, Employment and Workplace Relations
  
• Department of Families, Housing, Community Services and Indigenous Affairs
  
• Department of Finance and Administration
  
• Department of Foreign Affairs and Trade
  
• Department of Forestry and Fisheries
  
• Department of Parliamentary Services
  
• Department of Transport and Regional Services
  
• Department of Veteran Affairs
  
• EDS
  
• Environmental Protection Agency
  
• Ergon Energy
  
• Fujitsu
  
• Griffith University
  
• Honeywell
  
• Jabra
  
• Leading Solutions
  
• Maroochy / Caboolture Shire Council
  
• Medicare Australia
  
• Northern Territory - Office of Development
  
• Queensland Department of Emergency Services
  
• Queensland Department of Energy
  
• Queensland Department of Public Works
  
• Queensland Health
  
• Queensland Rail
  
• Queensland Treasury
  
• Roadtek
  
• SunWater
  
• Sirius Telecommunications
  
• The Village Building Company
  
• University of Melbourne
  
• Victorian Government Tier 2 Vendor
  
• Victoria Police
  
• World Vision Australia