If you're remembering the date correctly then you're wrong about the client; the Second Life client was open sourced in Jan or Feb 2007. It's still called "ope

If you're remembering the date correctly then you're wrong about the client; the Second Life client was open sourced in Jan or Feb 2007. It's still called "opensim" informally, but the formal name has (since 07 or so) always been "opensimulator". Development around the client hasn't closed but a lot of enthusiasm around both the opensimulator server and the second life client has quieted down, in part due to restrictions put in place by Linden Lab on 3rd party viewers sometime around 2012 (for the sake of "shared experience").