If you're looking for an alternative to Drawww, Picture it is worth a look. This open-source AI art editor uses stable diffusion models to generate and edit images. It comes with a variety of controls, including parameters to fine-tune image generation and to guide the drawing process. With outpainting and inpainting abilities, it's a full-featured environment for digital artists and hobbyists to create high-quality images.
Another good alternative is ArtRoom AI. It lets you create, edit and refine images with AI processes. It's a full-featured painting tool with layers and lots of styles, so you have plenty of options to be creative. ArtRoom AI also comes with a gallery of styles and mediums, so it's a good option for artists of all skill levels.
Draw Things is another good option, especially if you want to work offline. It requires iOS/iPadOS 15.4 or later and M1/M2 Macs with macOS 12.4 or later for privacy. The app uses Stable Diffusion models to generate images rapidly and has a variety of editing controls, including inpainting masks and text-to-image generation. It supports multiple models so you can pick among different styles.
Last is starryai. The app converts user prompts into images with a simple interface and accessible controls. It comes with a big library of styles and has options for customizing things like prompt styles and fine-tuning. It's geared for both casual users and pros, with an API for building websites and native apps, so it's good for generating high-quality images.