This folder contains extra tools to help develop the add-on or to help work with the add-on, but not as part of Blender.
BPSProxy is a standalone python program and a Python module to generate proxies in batch for Blender, from your terminal.
More information: BPSProxy repository
BPSRender is a python program to speed up the rendering of Blender Sequencer projects. It spawns several Blender processes in the background in parallel and joins the resulting video clips.
It is a temporary workaround for the performance limitations of the sequencer, that uses a single thread for most of the rendering work.
More information: BPSRender repository