Automatic1111

The most popular open-source web interface for Stable Diffusion, offering a comprehensive feature set that far exceeds the base model's capabilities. Automatic1111 (AUTOMATIC1111 Web UI) is the go-to tool for AI artists who want maximum control over every aspect of image generation.

• Full Stable Diffusion UI — txt2img, img2img, inpainting, and outpainting in one interface • Extension ecosystem — hundreds of community extensions for ControlNet, LoRA, and more • Batch processing — generate multiple images with varied seeds and settings • Prompt features — attention weighting, prompt scheduling, and negative prompts • Model management — easily switch between checkpoints, LoRAs, and VAEs • Advanced sampling — dozens of samplers and schedulers for fine-tuning output quality

Completely free and open-source. Requires a GPU to run locally.