Recently I found an old (from 2009), but very interesting fractal generator called Chaoscope. The development of the program was abandoned, but it has a huge undiscovered potential, IMHO. All images here are made by me.
Here is a simple symmetrical fractal:
Any fractal object can be rotated in 3D with mouse:
Fractals can be rendered as solid objects!
I continue to experiment with this. Try it too: http://www.chaoscope.org/