ComfyUI is a free, open-source graphical user interface for Stable Diffusion that gives creators full control over their AI workflows. Instead of rigid presets, you build pipelines visually with nodes, making it one of the most powerful and flexible SD frontends available. Key features:

🧩 Node-based workflow editor for maximum customization

🎛️ Supports advanced features like ControlNet, LoRA, and custom samplers

⚡ Optimized for speed and efficiency, with GPU acceleration

📂 Save, share, and reuse workflows for collaborative projects

🖼️ Preview outputs at every stage for iterative refinement

🌍 Active community contributing extensions, workflows, and tutorials

Perfect for artists, developers, and tinkerers who want complete creative freedom in AI image generation.