Cool VL Viewer 1.26

Launch Second Life and OpenSim clients and access their grids with multiple viewing and management options via the open-source third-party utility supported by the user community releasing regular updates and interface improvements based on feedback. It is compatible with official plugins.

The Cool VL Viewer (formerly known as Cool SL Viewer) is a third-party viewer for Second Life and OpenSim grids. In the name, "VL" of course stands for virtual life.
This viewer also implements the RestrainedLove (formerly known as RestrainedLife) features. These features are disabled by default, so you won't notice any difference with a "normal" viewer till you enable them manually.