Group Apps in the macOS Dock

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I recently found a post on /r/macOS that showed groups of apps in the dock.

Grouped macOS Dock

It’s done by writing to the user defaults store from the Terminal:

$ defaults write persistent-apps -array-add '{"tile-type"="small-spacer-tile";}'
$ killall Dock

This will add a small spacer to the end of the main section of your dock, which can then be dragged to wherever you’d like it. Add as many as you need to create your groups. To remove one, drag it out of the dock and release. A larger spacer-tile is also avaiable if you prefer.