GEMS vote-counting systems are and have been operated under five trade names: 
Global Election Systems, 
Diebold Election Systems, 
Premier Election Systems, 
Dominion Voting Systems, and 
Election Systems & Software, 
in addition to a number of private regional subcontractors. 

At the time of this writing, this system is used statewide in Alaska, Connecticut, Georgia, Mississippi, New Hampshire, Utah and Vermont, and for counties in Arizona, California, Colorado, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Massachusetts, Michigan, Missouri, Ohio, Pennsylvania, Tennessee, Texas, Virginia, Washington, Wisconsin and Wyoming. It is also used in Canada.”