The LightWave Assets / Plugins database maintains a list of free and commercial third-party plugins available for LightWave.
Find and Replace Surfaces Based On a Search
Speeds up the creation of complex gradient-related nodes
Speeds up the "patch end caps"-process
Fits UV Maps Into 0-1 Space
QWrinkle is a Modeler plug-in to create wrinkles interactively.
Straighten rectangular UV selection
Versatile state of the art fluid simulation
Colorida is a free non-destructive interactive cloning plugin.
Remesh complex models with good polyflow, quads and guides.