ComfyUI

ComfyUI is an open-source, node-based interface for building Stable Diffusion pipelines — you wire together nodes for models, samplers, LoRAs, and ControlNets into reusable workflows that go well beyond what a simple prompt box can do. The community has built thousands of shared workflows covering video generation and face swapping, and it's become the standard tool for anyone doing serious local image generation rather than just casual prompting.