Iliad is a sophisticated information retrieval system that lets you generate custom images with a lot of control. It marries brushstrokes and inpainting for color and composition control and has transformation strength controls for the final product. It's a good option for generating visual art assets fast, which means it's good for a lot of things.
Another option is Picture it, an open-source AI art editor that uses stable diffusion models to create and edit images. It has controls to fine-tune image generation and suggests prompts to improve image quality. With guided drawing, outpainting and inpainting, it's good for digital artists and enthusiasts who want to create high-quality AI art.
ArtRoom AI also offers a powerful interface for creating, editing and refining images with AI algorithms. It's got full-service painting with layers, unlimited Loras and ControlNets for fine control over imagery generation. It's notable for its human-friendly interface and high-quality image generation abilities.