InvokeAI is absolutely amazing. It might be the best WebUi for Stable Diffusion.
InvokeAI can run on GPUs as low as 4GB Ram. It has a Installer for Windows, Mac and Linux.
InvokeAI can do Text 2 Image (txt2img), Image to Image (img2img), Outpaiting on a endless Canvas and Inpainting. But that is just the start. InvokeAI will have Nodes, Textual Inversion, Dreambooth.
InvokeAI has persisten Cache Memory that starts where you left of last time.
InvokeAI is my new WebUI love!