The LightWave Assets / Plugins database maintains a list of free and commercial third-party plugins available for LightWave.
Batch weld multiple pairs of points
Quickly removes the selected layers from an object
A group of plugins ranging from IK modifiers to UV mapping
Refine a mesh, removing unneeded polygons
Geometry clean-up plugin
Convert the edges of all polygons to 2-point polys
Weld or merge points with options for where they should be placed