A device that supplements existing desktop equipment makes moving through 3-D environments more intuitive. Technology Review Unfortunately, the article only presents one device. Unusual in Technology Review. As a commenter suggests, it looks like an ad. Nevertheless, it shows a new kind of mouse for new uses. There has to be more out there.
3Dconnexion is the only one I've heard of. Small write up here: http://manufacturing.cadalyst.com/m...rticleDetail.jsp?id=514708&sk=&date=&pageID=3