Viewers are just as important to the Metaverse as OpenSim or AuroraSim are. After all, without a viewer you can't access the Metaverse at all. But not all viewers are created the same. Each has a little something different from the others. Which is great since each of us seeks the best possible experience. And there's always lots of discussions about the various pro's and con's of viewers. Yet, it seems to me that there isn't a listing of the viewers and their features. Yes, Second Life has their Third Party Viewer directory, but even that doesn't list any of the various features. Well, no more. Here's Misfit's Index of Viewers.