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Real-ESRGAN ncnn Vulkan vs Upscaler: catalog facts
Real-ESRGAN ncnn Vulkan	Upscaler
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 licence.
Windows, Command line	Linux
Runs locally on Vulkan-capable GPUs No Python environment needed	Runs fully offline on your own machine Sandboxed with no internet access
Command line only Repository has seen little activity since 2024	Requires a Vulkan-capable GPU Linux only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	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 1, 2026

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