whatsize

Install command: 
brew install --cask whatsize

Name: WhatSize

File system utility used to view and reclaim disk space

https://www.whatsizemac.com/

Cask JSON API: /api/cask/whatsize.json

Cask code: whatsize.rb on GitHub

Current version: 8.2.3

Current version requires: macOS >= 10.13

Analytics:

Installs (30 days)
whatsize 67
Installs (90 days)
whatsize 189
Installs (365 days)
whatsize 484