Jux is a fractal explorer for 2D Julia and Mandelbrot sets. It includes a variety of formulas. It has beautiful coloring and lighting effects. It is easy to use. There is no formula editor or scripting.

Features:
Easy switching between Mandelbrot and Julia sets
Julia explorer shows Julia set thumbnail corresponding to mouse position in preview
A selection of formulas, mostly generic with parameters
Fully multi-core for preview, explorer and rendering
Render large pictures with full anti-aliasing (when registered; max about 20kx15k pixels)
Batch rendering (when registered)
Render 8 bit depth map for post processing options
Numeric controls can be dragged like sliders
12 steps of undo/redo
Easily share parameters in social media, with copy/paste to the clipboard
Memory spots for temporary storage of formulas, coloring or lighting
Save your favorite settings as presets (formulas, coloring, orbit traps, lighting, gradients)
Hundreds of system presets included
One-click switching between 15 default color schemes
Gradient editor that includes tools to capture linear or randomized gradients
Coloring based on potential, distance estimate, mean z, basins, orbit traps, textures, fibers, field lines
Adjust color and lighting controls with realtime preview