webOS is mobile operating system software originally developed by Palm, but now owned by HP. The software is proprietary, as opposed toAndroid, which is an open source mobile operating system with development spearheaded byGoogle.
webOS was developed to replace the legacy Palm OS, and to provide support for"Web 2.0" functionality. The first handset to come packed with webOS was the Palm Pre in June 2009, carried by Sprint in the United States. Later, thePalm Pixi,Plus andPre 2 also featured the webOS operating system.
The OS interface is built for a multi-touch device, accepting gestures from the user to manipulate and control the OS and applications. The software can feature a virtual keyboard, but the Pre handset had a slideout keyboard anyway.
It supports multitasking, powered by the use of"cards". Running applications are switched between using a quick flicking gesture across the screen.

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