dockview

Install command: 
brew install --cask dockview

Name: DockView

Utility to preview application windows in the dock

https://noteifyapp.com/dockview/

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

Cask code: dockview.rb on GitHub

Current version: 1.6.8

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
dockview 8
Installs (90 days)
dockview 22
Installs (365 days)
dockview 95