One top pick is DeepMake, an open-source AI-powered content creation system that runs on your own machine. It can generate text-to-image, image-to-image, mask faces and objects, and upscale video. DeepMake is integrated with common VFX and video editing tools like Adobe After Effects and comes in several tiers of service, from free to custom.
Another good option is DiffusionBee, a standalone app that's free to use and that uses Stable Diffusion to create AI art on your machine. It's got a variety of creative tools like text-to-image generation, image-to-image translation and video tools. DiffusionBee runs locally, so your data isn't shared with anyone, and it works on macOS 13.1 or later, though Apple silicon machines run best.
If you're an Apple customer, Draw Things is an offline AI-powered image generation tool for iOS/iPadOS 15.4 or higher devices and M1/M2 Macs. It's got text-to-image generation, inpainting masks and lots of other customizable controls. It keeps your data private by running on your machine, and you can use different models for different styles.