Rockwell automation
http://www.rockwellautomation.com/

GE Intelligent platforms
http://www.ge-ip.com/products/family/proficy_hmiscada_ifix

Solarsoft - Informance
http://www.solarsoft.com/products/informance-manufacturing-intelligence

OSISoft
http://www.osisoft.com/

Invensys Wonderware
http://global.wonderware.com

Network Vision
http://www.intravue.net/

Schneider Electric
http://www.schneider-electric.com/