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/