Aveva Group Plc.
   Supplier of software solutions and services to the process industries, including PDMS for plant design engineering, VANTAGE for engineering change management, and other datacentric design tools.
   http://www.aveva.com/

PlantWare's PDMS Information
   Discussion of the benefits of using Cadcentre's PDMS (Plant Design Management System) software for collaborative 3D multi-user engineering.
   http://www.pdms.dk/

Plantcon A/S
   Danish PDMS sales, consulting, and training courses. Site includes free PDMS macros. (Site in Danish, English, and German.)
   http://www.plantcon.dk/