HP webOS is a propriety mobile operating system which runs on the Linux kernel. Which is quite similar to the Linux desktop versions we have access to. It was initially developed by Palm and purchased by Hewlett Packard (HP) in 2010. webOS features significant online social network and Web 2.0 integration.
webOS was introduced to the public on the 28th January 2009, at the Consumer Electronic Show in Las Vegas along with the Palm Pre. The device was later released on the 6th of June 2009. Subsequently many devices under Palm were released running webOS.
After HP purchased Palm, The Palm Pre 2 was released in October 2010 being the first device to feature webOS 2.0.
The operating system also features Synergy, which allows unified contacts, calendars and messaging. This allows you to sync your data from Google, Yahoo, Facebook, LinkedIn and Microsoft Outlook via Exchange ActiveSync.
webOS uses cloud-based synchronization services in order to keep your data synced, instead of a desktop client.