Awesome

homebrew-autoraise

Usage:

brew tap dimentium/autoraise
brew install autoraise
brew services start autoraise

You can compile AutoRaise with different options:

brew install autoraise --with-dalternative_task_switcher

brew install autoraise --with-dold_activation_method

brew install autoraise --with-dexperimental_focus_first

or any combination of the above.

Also you can install the pre-compiled version of AutoRaise.app with GUI with cask:

brew install --cask dimentium/autoraise/autoraiseapp