Microsoft announced on Friday that it is dropping its Aero UI in the final version of Windows 8. Instead, the new user interface will adopt a cleaner, flatter look and feel.

Apple introduced the Liquid Glass user interface at the Worldwide Developers Conference. ... For example, if you grab a Liquid Glass window and pull, it’ll jiggle and move with your finger.

Apple describes Liquid Glass as a material that sits above the user interface (UI) on your phone. The material moves based on how you interact with it.