Second Life Viewers ➩ Catznip Viewer

"Catznip aims to refine and reinvent your window into Second Life. Our focus is stability, usability, privacy and plenty of new original home grown features. It's about taking a fresh look at things and attempting to do them better.
Catznip is the development viewer for the alternative implementation of the RLV specification. RLVa goes from Catznip into many other TPV's including Firestorm and Phoenix. This is especially useful for script developers as Catznip represents the future of RLVa often months ahead of the mainstream."