Optical Scan
Unilect Corporation
UniLect Patriot & Peripheral Dynamics VMR 138
Direct Recording Electronic (DRE)
Microvote General Corporation
Microvote MV-464
Optical Scan
Premier/Diebold
AccuVote OS Central Count
Ballot Marking Devices
Five Cedars Group
Alternate Format Ballot
Optical Scan
DFM Associates
DFM Mark-A-Vote
Ballot Marking Devices
Avante Technology
Avante Vote-Trakker
Direct Recording Electronic (DRE)
Advanced Voting Solutions (AVS)
AVS WINVote (and WINScan)
Optical Scan
Sequoia Voting Systems
Central Count Optical Scan
Punch Card Voting Systems
Election Systems & Software
Votomatic
Optical Scan
Election Systems & Software, Sequoia Voting Systems
Optech IIIP-Eagle (aka Optech 3P-Eagle)