Last I remember, they didn't want people working on both viewer and OpenSim to avoid accusations of copying from a GPL viewer into the permissively licensed Ope

Last I remember, they didn't want people working on both viewer and OpenSim to avoid accusations of copying from a GPL viewer into the permissively licensed OpenSim. This, obviously, makes implementing new non-Linden features nigh impossible. Of course, this policy changed a few months after I stopped playing with OpenSim. I think RealExtend had something to do with it. I remember playing around with their viewer and being impressed, but never doing much else with it.