Chris Coyne created a small language for design grammars called CFDG.
These grammars are sets of non-deterministic rules to produce images.
The images are surprisingly beautiful, often from very simple grammars.

Context Free is a full graphical environment for editing, rendering,
and exploring CFDG design grammars.

Features:

   * Simultaneously available for Macintosh, Windows and Posix/Unix.
   * Progressive image update: watch it generate
   * Save generated images in PNG or SVG format.
   * Produce animations
   * Edit grammars and re-render easily.
   * Render very large images (as large as 100 Mega-pixels).
   * Can handle generated images with millions of shapes.
   * Carefully tuned graphics rendering
   * Many built-in examples
   * Automatic checking for updates (Mac only).
   * It's free, as in beer and as in speech.

• Timur Batyrshin

• cfdg