The LightWave Assets / Plugins database maintains a list of free and commercial third-party plugins available for LightWave.
Batch render scenes over a network or a single machine
Network rendering controller
Allows you to easily setup multiple render passes
Allows you to bake multiple objects in a series and via a render farm
An FTP based renderfarm controller for LightWave
A render farm controller with a lot more flexibility than Layout
Drag-and-drop-dead-easy™ network rendering for LightWave3D ScreamerNet