jdiskreport (deprecated)

Install command: 
brew install --cask jdiskreport

Name: JDiskReport

Disk usage utility

https://www.jgoodies.com/freeware/jdiskreport/

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

Cask code: jdiskreport.rb on GitHub

Current version: 1.4.1

Current version requires: macOS >= 10.11

jdiskreport is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
jdiskreport 10
Installs (90 days)
jdiskreport 20
Installs (365 days)
jdiskreport 103