Software provides you with software for the execution of growth grammar programmes:

GroIMP is a modelling platform which supports features like interactivity, a rich set of 3D objects and data interfaces. Its speciality is the integrated modelling language XL.
GROGRA is a software for the interpretation of sensitive growth grammars which form an extended variant of L-systems.
XL4C4D is a plugin application for the 3D modelling software CINEMA 4D. It enables CINEMA 4D users to benefit from the advantages of rule-based modelling, while they can use the full power of CINEMA 4D's editing and rendering features.