Smultron, the little Text editor that you could edit fractals with.

You can open Flame files, edit the text inside, save the files, and Smultron will update the Fractal image for you.

But Smultron knows nothing about fractals. How does this work?

Its a Quicklook aware application, that can use other applications’ Quicklook plugins to render large thumbnail images with. Smultron is using Fractal Architect’s Quicklook plugin to render those thumbnails.