DiffusionBee: AGPL-3.0 license (Native app)

InvokeAI: Apache license 2.0 (web-browser UI)

automatic1111: AGPL-3.0 license (web-browser UI)

ComfyUI:GPL-3.0 license (web-browser UI)

There's more, but I don't pay enough attention to it

Thanks! https://lmstudio.ai/ too. For the more technically inclined perhaps.

I don't think lmstudio is competes with Stable Diffusion frontends, even for the technically-inclined.

for people with Intel video cards (all 10 of us!) there's also SD.Next (automatic1111 fork): https://github.com/vladmandic/automatic

I'd also recommend InvokeAI, an open source offering which has a very nice editable canvas and is very performant with diffusers.

https://github.com/invoke-ai/InvokeAI

I just installed InvokeAI and wish I hadn't. It installs -so much- outside of its target directory. A1111 and ComfyUI are fairly self contained where you put them.

It's all isolated in a single directory, though, right? I set it up ages ago, but my recollection is that it installs itself in ~/invoke on Linux and stays contained there.

I like ComfyUI the most now but it's probably not the most beginner friendly. But has great features, is extensible, and you can build workflows that work for you and save them so you don't have to click a million times like Auto1111.