ComfyUI

A node-based graphical interface for Stable Diffusion, where every step of image generation is a wired block on a canvas instead of a line of code. Workflows can be saved, shared and re-parameterized, and a large ecosystem of custom nodes adds upscalers, conditioning, video and 3D generation.

Artists and technical teams use it to build reproducible workflows, batch images for a product line, and tune prompts and sampling settings visually.

On your own hardware, prompts and outputs stay under your control, there are no per-generation cloud fees, and a workflow folder is simple to back up. It can be deployed as a self-contained service.