Fractal computes Mandelbrot set images. Users can explore the set and find interesting segments to render. Once the set is computed, the color palette can be adjusted to set the overall color scheme and to bring out details. Image settings can be saved for later use and images can be exported to BMP files for desktop patterns, etc.
Could not be easier. Each click on part of the Mandelbrot image enlarges it. Keep going until you find a patter you like.
Cons
It is a single purpose program. No added features.
Summary
IF you work with art you can find amazing patterns to use for backgrounds and as raw designs to improve on. If you want a program to do that for you, look elsewhere.
It is a simple program to show the details of a Mandelbrot image.