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nsxiv vs Oculante: catalog facts
nsxiv	Oculante
Free Free open-source software.	Free Free open-source software.
Linux	Windows, macOS, Linux
Very small and fast Keyboard-driven with a thumbnail browsing mode	Fast viewer built in Rust Wide image format support
X11 only Configured by editing source and recompiling	Project is in maintenance mode Editing features are basic
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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