Hotpaint is useful tools for manage working with clusters in maya software. That allow us to edit, mirror, create, export and import weight very fast.
key features

Fast
Save time for create , edit and access cluster list

Grouping
Search and grouping clusters by name or position

Mirror Weight
mirror cluster weight by multiple ways

Export
easy way to export cluster shape and weight data

Import
import cluster shape and weight data with multiple ways

setup control
setup control for every cluster and mirror it by any character mesh position