Galapago is a program that uses basic LOGO language syntax and Turtle drawing to render Lindenmayer systems (L-systems). I designed it to help me learn the math techniques described in the book The Algorithmic Beauty Of Plants [Prusinkiewicz and Lindenmayer]. It has since evolved into a tool for executing LOGO scripts, which can be used and expanded upon by programmers, mathematicians and teachers.
Galapago program for rendering L-Systems in LOGO
Reusable GalapagoEngine LOGO processor
Support for pluggable renderers (includes GalapagoPanel)
Supports Edge-Replace and Node-Replace functions
Executable JAR file (with systems configured to run Java JARs)