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IMPORTANT: Kirstens Viewer is a Third-Party Viewer

About This Viewer

Kirstens Viewer is a maintained fork of the official Second Life Viewer. It prioritizes fidelity, performance, and compatibility with modern Windows environments. The build system has been custom-engineered for clarity and streamlined execution.

  • Optimized for modern multi-core CPUs with AVX2 and FMA
  • Modern C++ techniques: replacing historical legacy code
  • No autobuild, minimal external dependencies
  • Functionality aligns with official viewer behavior

This viewer is not affiliated with Linden Lab. Users must adhere to the Second Life Terms of Service.

This software is provided "as is" with no warranty. You assume all risk of use and agree that the Kirstens Viewer team is not liable for any loss or disruption caused by use of this software.

Privacy Features

Kirstens Viewer respects user privacy and disables the following components by default:

  • Background Updater
  • Metrics Collection
  • Crashlogger

Message from Kirstenlee

Thank you for your time and interest.
Best wishes always,
Kirstenlee Cinquetti

Build History

Build 2182 Codename: OTHAN

  • Forked from Viewer 7.1.13 (2025.4 core)
  • +184 commits beyond official base
  • Custom JPEG2000 decoding via AVX2 acceleration
  • Math subsystems accelerated with AVX2 and FMA
  • Optimized object list latency handling
  • AVX-tested math fixpack applied

Build 2342 Codename: DRIF

  • Based on Viewer 7.1.16 (2025.5)
  • +178 additional commits
  • Experimental rendering via Viewer VFX stack (OpenMP)
  • Inventory system rebuilt with diskcache and flag logic
  • UI and chat responsiveness improved
  • Chat Mention feature refined from alpha build

Build 2527 Codename: FARA (S24.3 Rev 1)

  • Forked from Viewer 7.1.16 / 2025.6
  • 3D Anaglyph V7 added
  • Fixed: preferences floater, GLTF notices, teleport object visibility
  • Linden Lab patches: IDs 4063–4300 (inc. p430 subset)
  • Updated LLWindow subsystem with DirectX 12
  • Viewer math: updated V2/V3/V4 vectors and colors (DirectX & AVX)
  • Removed boost usage in hashing subsystem
  • Atmospheric rendering upgraded with anisotropic filtering
  • UI artwork retouched
  • Shutdown routine revamped via ARES process manager
  • DiskCache tuning and low-level setting hooks added
  • Multi-core CPU affinity control now supported
  • APR and datapacker modules hardened
  • Binaries signed:
  • Codesign: 4e2969400a179e151ba7323da181f8b0

Build 2610 Codename: Sjáandi (S24.4 Preview 2)

  • Forked from Viewer 7.2.0 / 2025.6
  • People Range Slider added
  • Skins overhauled
  • All Viewer libraries updated (2025-08-15)
  • Binaries signed:
  • Codesign: 4e2969400a179e151ba7323da181f8b0

Kirstens Viewer is independently developed. For support, build reports, or contributions, please use the designated contact channels.
Special thanks to SourceForge for hosting this project and supporting the open source community.

"I learned very early the difference between knowing the name of something and knowing something." — Richard P. Feynman

Source: readme.md, updated 2025-08-15