What is FaceTime on macOS?

/System/Applications/FaceTime.app/Contents/MacOS/FaceTime

Application for video and audio calls

Allows users to communicate with friends and family through video and audio calls. FaceTime provides a simple and easy to use video and audio calling system, allowing you to move freely between devices as you talk.

/System/Applications/FaceTime.app/Contents/PlugIns/FaceTime.docktileplugin/Contents/MacOS/FaceTime

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