AccuPoll Holding Corp.

This Newport Beach, Calif.-based company declared bankruptcy in January. AccuPoll's e-voting technology, which lets the voter make selections on a DRE touch screen and then printed a paper ballot, has been certified for use in Texas and Missouri.

Advanced Voting Solutions Inc.

Once upon a time, Frisco, Texas-based AVS was known as Shoup Voting Solutions, and it built lever machines. Company founder Howard Van Pelt's previous company, Global Election Systems, grew up to be Diebold. AVS e-voting machines are or have operated in Mississippi, Pennsylvania and Virginia.

Aradyme Corp.