Stable Diffusion is one of the most powerful AI art generator out there. Compared to Midjourney AI, you can use Stable Diffusion free with Google Colab, or with your own computing power. Environmental style generation is comparable, albeit Midjourney is mostly better. But the flexibility of using your own image

Have an old photo lying around or a specific image or art that needs a little bit more clarity and detail? Try Upscayl, a free open source AI image upscaling software made by Nayam Amarshe, TSG963, and others. You can check the project out at https://github.com/upscayl/upscayl.