Looking for Biomorphic Modeling Software

Grasshopper for Rhino is popular - it’s algorithm driven 3D.

Maya also has some similar abilities because you can do MEL scripting to generate geometry, but I haven’t played with any of that recently.

Grasshopper is probably the best place to start. Keep in mind they aren’t really being “modeled” most of these are the results of experimentation from plugging in different inputs and outputs to generate shapes.