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Stable Diffusion web UI vs SwarmUI: catalog facts
Stable Diffusion web UI	SwarmUI
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux	Windows
Includes inpainting, outpainting and configurable generation settings.	Supports several model families and extensible processing backends.
Requires Python, model files and suitable processing hardware.	Backend setup and model requirements vary by workflow.
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: MIT
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 22, 2026

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