Microsoft

Ontology Add-in for Word 2007 "Microsoft External Research’s goal with this project is to enable communities who maintain ontologies to more easily experiment and to enhance the experience of authors who use Microsoft Word for content creation, incorporating semantic knowledge into the content."
http://research.microsoft.com/en-us/projects/ontology/

Word Add-in For Ontology Recognition "A Word 2007 add-in that enables the annotation of Word documents based on terms that appear in Ontologies" http://ucsdbiolit.codeplex.com/

Microsofts new seach engine Bing www.bing.com/ and Powerset are now attending Semantic Web conferences http://www.bing.com/community/blogs/powerset/archive/2009/05/18/powerset....

Microsoft set to launch Semantic Web light http://www.sitepoint.com/blogs/2008/03/26/microsoft-set-to-launch-semant...