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: 1.6.7

Requirements: macOS >= 10.13

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dockview 9
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dockview 25
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dockview 97