I’m using Modo for all my 3D graphics work now. It is a wonderful, feature rich software, and it’s not too hard to make scripts for it.

ObjectBakeExtender v1.0: This script stores the bake distance in mesh items.
The script is for modo 401 or above. Support thread.

CameraExtender v1.0: This script stores render parameters in cameras, so each camera can have its own resolution, GI settings and the like.
The script is for modo 401 SP1 or above. Support thread.

ColladaExporter for modo v1.01: I designed this application and hired a coder to make it. In spite of Modo’s lack of bone support, the script generates bones and influences based on guide primitives. The detailed workflow is explained here.

ASE exporter for Unreal v1.08: A customized .ASE exporter for exporting models in a way Unreal likes it. Exports 3 UVs, vertex colors, embedded collision geometry. I wrote an article describing the Modo-to-Unreal workflow.

Toggle Unit System: A small workaround for the UV issue described in this thread on the Modo forum.

Weight2UV: A workaround for the weightmap issue described in this thread.