If you want a digital drawing tool that uses AI to boost your imagination, getimg.ai is a great option. It comes with a range of tools, including an AI Generator for text-to-image creation, DreamBooth for training your own models, and ControlNet for guiding AI generation. It also has an API for easy integration and more than 80 community-trained AI models. That means it's good for a range of artistic purposes, from photorealism to character creation.
Another option is Picture it, an open-source AI art editor that uses stable diffusion models. It has controls for fine-tuning image generation, auto-suggesting prompts and extending image boundaries. The interface is designed to be approachable and community-driven, with community contributions that should expand its abilities over time.