Provides usability consulting, research, training and conferences. Located in Massachusetts, United States... 

http://www.uie.com/

Consulting agency offering to enhance the user experience. Includes news, events and publications. Located in California, USA... 

http://www.nngroup.com/

OpenGeo is a non-profit organization that provides commercial support and development services for free software. The company specializes in solutions for the geospatial web based on GeoServer. OpenGeo provides support and services around GeoServer, OpenLayers, PostGIS, GeoWebCache, and GeoExt... 

http://opengeo.org/

An Internet consultancy specializing in the creation of online communities. Brighton, United Kingdom... 

http://www.swingdigital.com/

Specializes in internee systems using Open Source software including database driven websites and browser based applications for businesses... 

http://www.revsys.com/

Cybersulting is an international, full-service online consultancy focusing on Internet Marketing, Consulting & Web Development... 

http://www.cybersulting.com/

KDCS provides consultancy, training and research for the information and digital domain... 

http://www.kdcs.kcl.ac.uk/