hello and welcome to the forums, a list of apophysis hacks would indeed be quite informative
somewhere is a 3d hack and some contain interesting transforms ... i for myself am not too much into this old school software for once i am a happy owner of ultrafractal, and all the other stuff can be done with very active developed freeware, like jwildfire (apophysis replacement) or mb3d and mandelbulber nevertheless many people might find it very interesting to find such old software collected in a single place