Version 1.0.1

Definitely one for the fern enthusiasts, Fronds is a screen saver that draws never–ending fractal ferns. New ferns gradually appear while the old ones slowly fade out.

Fronds is a homage to my old Windows screen saver Ephemera — I still remember its ferns mode fondly more than 20 years after I first released it.

Fronds uses IFS fractals to draw the ferns, which continues a long association for this type of fractal: the Barnsley fern is one of the classic examples of an IFS.


  • macOS 10.13 or later.


Right–click on the Fronds icon and select Open from the pop–up menu. If you choose to install for all users, or if your user doesn’t have administrator privileges, macOS will prompt you for an administrator user name and password.


Release Notes

  • Version 1.0.1 — 28th June 2020
    • Fixed a memory leak.
    • Improved the Metal kernel that draws the ferns, so it will run more efficiently now.
  • Version 1.0.0 — 23rd June 2020
    • Initial public release.