I recently checked to see if there are any new fractal generators since I last played with them. Apparently not, at least for Macs not running the latest OS. Ultra Fractal is still the most capable. It’s pricey, but it does give you a month’s free trial. Xaos works well also, and it’s free.
Fractal Domains and Fraqtive have not been updated since I last used them over five years ago. It’s possible to make pretty, complicated pictures with them, but it’s a struggle, and to my eyes the results from the other two applications look better. Both are free now, so check them out if you’re curious.
For all of these, right-click and open in a new window to see every little detail.
A few more images: