Jux screenshot

Requirements for Jux

Operating System: Windows XP/Vista/7/8/10/11 (32 or 64 Bits)

Note: Jux Installer needs Windows 7SP1 or later

It should run on Mac using any Windows emulation (Wine has some problems)

It does not work properly in Linux Wine

Multi-core cpu is good; the graphics card is not important

Jux for Windows

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.


The free version is limited to 640x480 anti-aliased rendering. Register to unlock the render size controls, enable batch rendering, allow exporting gradients in .ugr format, and support further development.

What's new in Jux v4.21

Note: if you are already using Jux 4.1 or earlier, it is recommended to uninstall it, then install Jux 4.21 to the same folder. Use the same location for personal data as before. Your own files should be kept separate from the Samples folder.

If you already registered Jux (any version), it is valid for v4.21 too: updating is free. If you lose your registration key, just email us.

Download Jux V4.21 setup (11MB) (Windows 7SP1 or later): Download Jux button

Download Jux V4.21 portable (11MB) (Windows 2k/XP or later): Download Jux button Does not need installing, but read the included README.txt file before use.

Register Jux: US$ 27

Jux formula and coloring samples Jux lighting samples

More details about Jux

Formulas and navigation

Jux can draw both Julia and Mandelbrot fractals.

Here are some examples of different formulas and coloring (without lighting).


There are many possible ways to color Mandelbrot/Julia fractals. Jux has built-in methods chosen for their simplicity, flexibility and aesthetics. You can use coloring alone, or modify it with heightfield lighting effects.


Jux can add lighting effects to bring the fractals into 3D. The fractal is calculated as a height field in a 3D lighting environment.

Here are some examples of lighting with various materials.