Established companies highlighted their latest offerings at GDC 2007.

Ben Farkas, director of sales and marketing at Oddcast, described the company's conversational character technology, which can help companies sell their products through animated avatars that can run on web sites as well as mobile phones that can run multimedia messages.

The New York-based company has been around since 2003 and has worked with clients such as ESPN, Gillette, and Bratz Dolls.

Site9 also highlighted its web site development software. Don Carter, chief executive of the Portland, Oregon-based company talked about the ability of the company's Site9 Launch Platform to prototype and build web sites for advertisers and customers rapidly.