Compare software

CactusViewer vs JarkViewer: catalog facts
CactusViewer	JarkViewer
Free Free and open source under the BSD 2-Clause licence; donations are welcome.	Free Free and open source.
Windows	Windows
Single executable with no installer needed GPU rendering through a custom Direct3D 11 renderer	Opens AVIF, HEIC and JPEG XL without extra codecs Handles animated images, RAW files and Live Photos
Windows only No packaged releases on the GitHub repository	Windows only Viewer only, with no editing or library features
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
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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