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SwarmUI vs NMKD Stable Diffusion GUI: catalog facts
SwarmUI	NMKD Stable Diffusion GUI
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Distributed on itch.io at a name-your-own-price rate.
Windows	Windows
Supports several model families and extensible processing backends.	Dependencies included, no manual setup Supports custom models, VAEs, LoRA and Textual Inversion
Backend setup and model requirements vary by workflow.	Windows only Speed depends on your GPU
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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