It's an editor and renderer for Fractal Flames[1] written in C++17 with a UI in Qt/QML. Other software that renders Fractal Flames is e.g. Electric Sheep[2] or Apophysis[3].
It's a project that I've been working on and off for 10 years and it's still not ready… Reimplementing it several times certainly didn't help, but I learned a lot in the process! It's grown from a simple for loop to basically a language interpreter.
Sorry for the lack of README or license, but this is still half-baked. I want to release and open-source it one day though.