http://www.trihedral.com - VTScada™ applications require at least one license installed on a specific Windows® computer. Additional installations require additional licenses. Each installed license includes all of the standard components below and can be configured as either a client or a server. Expand the capabilities or each installed license by enabling one or more optionally priced components. Remote (thin) Internet client licenses for PCs, laptops or mobile devices are also available (require at least one installation).