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Upscaler vs Real-ESRGAN ncnn Vulkan: catalog facts
Upscaler	Real-ESRGAN ncnn Vulkan
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the MIT licence.
Linux	Windows, Command line
Runs fully offline on your own machine Sandboxed with no internet access	Runs locally on Vulkan-capable GPUs No Python environment needed
Requires a Vulkan-capable GPU Linux only	Command line only Repository has seen little activity since 2024
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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