Firestorm Viewer

Firestorm Viewer is a popular third-party 3D viewer client for the virtual worlds Second Life and OpenSimulator. It provides an extended feature set beyond the official viewers, including advanced avatar customization, building and editing tools, extensive graphics and UI options, mesh and material support, and integrated voice/chat functionality.

The viewer is cross-platform and available in 32- and 64-bit builds for Windows, macOS and Linux; 'FirestormOS-Releasex64' likely refers to a 64-bit...