VTScada 11.1 from Trihedral Engineering Limited enables growth from a full-featured single-server application to a multimillion-tag system that keeps critical features tightly integrated. The driver library supports combinations of standard and proprietary PLCs and RTUs. In minutes, users can configure redundant servers, historians, Internet servers or networks. Built-in version control provides accountability and improves recovery from unexpected effects of configuration. Over 200 graphic widgets make it easy to represent values as more than 4,500 realistic meters, switches, buttons and animations. 800/463-2783; www.trihedral.com.