If you're looking for a free text-to-image generator that works as a Photoshop plugin without needing a GPU, ImageCreator is a great option. The plugin supports a range of models, including Stable Diffusion and Generative Fill, and can produce high-quality, production-ready art assets. It's simple to use and works on Windows and macOS, with one-click installation.
Another option worth mentioning is PixelPet, which produces high-resolution images using SD 1.5 Civitai models. It has a native Photoshop integration and can generate images instantly up to 1344x768px. Although it offers credits for accelerated features, you can use the basic features for free, so it's a good option for artists and designers.
If you prefer open-source options, DeepMake offers a full generative AI platform for generating images and videos. It can perform text-to-image generation and integrates with Adobe After Effects for a lot of creative control over the output. Although it requires specific PC and Mac hardware recommendations for best performance, it's a powerful option for creative pros.