webOS was seen as a forward-thinking mobile operating system, notably for its “Cards” multitasking interface. Apps were displayed as small cards, and could be grouped together. It presented a thumbnail of the instance; tapping on the card resumed an app. RIM seems to be expanding on the functionality in BlackBerry 10, its reboot of the BlackBerry OS, with open apps represented in thumbnails. Microsoft also offers a card-esque multitasking view in Windows Phone.