Catznip Second Life Viewer is described as 'Catznip is graphical client for Linden Lab's user created 3D virtual world, Second Life. Our aim is to refine and reinvent your in-world experience. Our focus is stability, usability, privacy and plenty of new original homegrown features' and is an app in the Social & Communications category. There are five alternatives to Catznip Second Life Viewer for Mac, Windows, Linux and Online / Web-based. The best alternative is Radegast, which is free. Other great apps like Catznip Second Life Viewer are Second Life Viewer (Free), Firestorm Viewer (Free, Open Source), Singularity Viewer (Free, Open Source) and Kokua / Imprudence (Free, Open Source).
Singularity Viewer is an exciting client for Second Life and OpenSim, which strives to combine the beloved look and feel of Viewer 1.23 with the latest and greatest of available technology, and to stay compatible with future Second Life changes and features.
Kokua is an open source viewer for Second Life and OpenSim-based virtual worlds. The goal of Kokua is to improve the user interface and usability of the viewer through community involvement, thoughtful design, modern development methods, and a pro-change atmosphere.