Swing like an ape from shape to shape
GRAPE (GRaph shAPE) is a shape grammar editor based on graph grammars. It currently utilizes the package GrGen.NET and is implemented as plug-ins for Rhino 5 and AutoCAD 2011.
Hardcoded rules can support parametric shape grammars in U13 x V03. The visual editor, which is a more recent addition supports parametric shape grammars in U13. GRAPE is based on constrained topology graphs and can handle sub-shape recognition under similarity transformations.