mirrordisplays (disabled)

Install command: 
brew install --cask mirrordisplays

Name: Mirror Displays

https://fabiancanas.com/open-source/mirror-displays

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

Cask code: mirrordisplays.rb on GitHub

Current version: 1.2

Requirements: macOS >= 10.13

mirrordisplays 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)
mirrordisplays 12
Installs (90 days)
mirrordisplays 27
Installs (365 days)
mirrordisplays 73