Open-source
ComfyUI is a node-based app for building image generation workflows with Stable Diffusion and other models. You connect blocks for prompts, models, and settings, so you can design and reuse powerful image pipelines.
Platform: Windows, macOS, and Linux. Best for: Flexible, node-based AI image generation. Replaces: Midjourney and paid image generation tools.
Verified: October 2026