If you're looking for a replacement for Astria, Leonardo is another top contender. This AI image generator is designed to produce high-quality visual assets at scale with features like image generation, AI Canvas for editing, and 3D texture generation. It's geared for creators, teams and developers, so it's good for a wide range of creative uses.
Another option worth considering is Facet. Facet is an AI image generator and editor geared for pros who need to generate and edit images in real time. It supports spatial prompts, auto-enhanced image prompts and a collaborative canvas, so you can get a balance of creative assistance and control. Facet is a browser-based service, so you don't have to install anything.
If you prefer an open-source option, DeepMake offers generative AI-powered content creation that runs on your own PC so you can have full control over the creative process. DeepMake can generate text-to-image, upscale images, mask faces and objects, and integrate with popular VFX and video editing software like Adobe After Effects.
Last, Picture it is an open-source AI art editor that uses stable diffusion models. It includes tools for fine-tuning image generation, auto-suggesting prompts, and outpainting to extend the boundaries of an image. It's geared for digital artists, designers and enthusiasts who want to generate high-quality images quickly and easily.