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CactusViewerImageGlass
Free

Free and open source under the BSD 2-Clause licence; donations are welcome.

 Freemium

A free edition plus a paid Pro edition, listed at $14.90 as a one-time purchase for one…

Windows Windows, macOS, Linux
  • Single executable with no installer needed
  • GPU rendering through a custom Direct3D 11 renderer
  • Over ninety formats natively, including WebP, JPEG XL, HEIC, AVIF, SVG, HDR and raw
  • Fast navigation through large folders with predictive caching and hardware acceleration
  • Windows only
  • No packaged releases on the GitHub repository
  • Some features are reserved for the paid Pro edition
  • The macOS and Linux builds are much newer than the Windows one
Downloadable app Downloadable app
Open source Open source
License: BSD-2-Clause License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.