Ontoprise

Brought to my attention and reviewing: Ontoprise. "  ... is a leading independent software vendor for industry-proven Semantic Web infrastructure technologies and products used to support dynamic semantic information integration and information management processes at the enterprise level. With its mature and standards-based products and its extensive experience ontoprise is delivering a key segment of the upcoming Semantic Web. ontoprise has developed a comprehensive product suite designed to support the deployment of semantic technologies in the enterprise.... " .

Products in collaborative knowledge management, Ontology modeling environments and Semantic Web Middleware.  Looks like some impressive Semantic Web based offerings.