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Waifu2x-Extension-GUI vs waifu2x-caffe: catalog facts
Waifu2x-Extension-GUI	waifu2x-caffe
Freemium Free for personal use under the project licence. Commercial use requires the paid Premium…	Free Free and open source under the MIT license.
Windows	Windows, Command line
It bundles several upscaling and frame-interpolation engines behind one Windows interface and works with AMD, Intel and…	Runs image upscaling locally Both a GUI and a command-line tool
The licence permits personal use only, so commercial use requires buying the Premium build, and the code is…	Windows only Documentation is primarily in Japanese
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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