In October and November (2010) Second Life was testing browser based viewers… or saying, replacing the viewer with your browser, may be more accurate. See: Second Life in a Browser. Today New World Notes has an article (Jibe, a Unity/Web-Based Virtual World from ReactionGrid) about another Linden Lab alumni opening a new virtual world. This world is a Reaction Grid world and uses a browser in place of the specialized viewer we normally use.