The LightWave Assets / Plugins database maintains a list of free and commercial third-party plugins available for LightWave.
The OD Toolset is a combination of Layout and Modeler enhancements
Find and Replace Surfaces Based On a Search
Quick selection surfaces directly in layout viewport
Replaces the surface data in an object sequence with another surface
Allows you to bake multiple objects in a series and via a render farm
Picks the surface of a selected polygon in the Surface Editor