See also:
Algorithmic Botany The definitive resource for L-Systems, this University of Calgary site is maintained by Lindenmayers collaborators. It contains many articles, and a full-length copy of 'The Algorithmic Beauty of Plants'. http://algorithmicbotany.org/
Christian Jacob A collection of papers related to using Mathematica to generate L-Systems. http://pages.cpsc.ucalgary.ca/~jacob/Publications/Publications.html
Fractal Geometry: L-Systems Introduction to L-systems by Michael Frame at Yale University. Includes background information. http://classes.yale.edu/fractals/IntroToFrac/InitGen/LSystems/LSystems.html
GDesign 1.0 Generative art tools that create complex 2D and 3D objects breeding LSystems, Cellular Automata, and Shape Grammars. Freeware by Umberto Roncoroni. http://www.digitalpoiesis.org
Laurens Lapre's Lparser Windows software and some information on LSystems and related ideas. http://members.ziggo.nl/laurens.lapre/
LGrammar A graphics tool for Lindenmayer systems in C and Java. http://robotics.ee.uwa.edu.au/lgrammar/
Lindenmayer System Subject entry from Wolfram MathWorld. Includes references and downloadable Mathematica notebook. http://mathworld.wolfram.com/LindenmayerSystem.html
lsystem A simple implementation of Lindenmayer systems written in Python. http://www.alcyone.com/software/lsystem/
L-systems A guide to the theory behind L-Systems. http://www.math.okstate.edu/mathdept/dynamics/lecnotes/node12.html#SECTION00040000000000000000
L-Systems Explorer A Windows-based L-System program. http://www.generation5.org/content/2002/lse.asp
L-Systems Tutorial A mathematical introduction to how L-Systems work. http://vlab.infotech.monash.edu.au/resources/tutorials/l-systems/
A Sketchbook on L-systems Modeling and visualization of plants using parametric L systems. http://coco.ccu.uniovi.es/malva/sketchbook/
Wikipedia L-systems A well rounded introduction to L-Systems. http://en.wikipedia.org/wiki/Lindenmayer_system
