Ultra Fractal is a full-featured and very fast fractal animation making software developed by Frederik Slijkerman in 1999. It contains thousands of fractal types and coloring algorithms, supports zoom in/out function, uses gradients to add color, and is able to apply multiple layers to combine different fractals in one image - this layering method previously was only found in image editing software.

Mandelbrot set (Julia set is similar) is regarded as one of the most mysterious and formidable research objects in mathematics, also the most fantastic and magnificent geometric figures ever created over the whole history of mankind that called "fingerprints" of god. Grasping the drawing methods of them both, you will see and experience the beauty of mathematics.