Open WebOS is a smartphone and tablet operating system that was originally developed by Palm and later Hewlett -Packard. It represents the successor of the Palm OS and is adapted to operation of any capacitive touchscreen with multi-touch gestures. The name is representative of the deep integration of Internet services and the integration of web technologies in the developed based on Linux operating system and the user interface. On 18 August 2011 HP announced the setting of the development of webOS -based devices. WebOS was released in 2012 by HP as open source software. Early 2013 bought LG webOS.

  • 3.1 Software Development
  • 3.2 Plug -in Development Kit ( PDK)


The last public version 5.4 of Palm OS supported only two connection profiles and thus in smartphones ( with GPRS and Bluetooth) no additional UMTS or integrated GPS. This could not keep up with the other manufacturers the hardware equipment of the future Palm devices. Palm therefore developed under the codename Nova 's new operating system webOS.

The operating system was introduced together with the first smartphone at the Consumer Electronics Show on January 8, 2009 in Las Vegas, the Palm Pre was released in June 2009.


WebOS is a multitasking operating system with a Linux-based kernel. The user interface has been developed based on WebKit. Several applications can be open simultaneously browse through a live preview. It is operated by finger gestures on a touchscreen. The operating system is optimized for easy interaction with Internet services and has extensive functions for the use of cloud computing services, such as online data storage, calendar, contact management, social networks.


All PIM data is stored on the device and constantly synchronized with internet services such as Gmail. Using a technique called Synergy to all the information, for example from different calendar systems such as Exchange and Google Calendar, are clearly summarized in an application. Synergy links contacts, calendar events and emails from various sources (among above-mentioned Exchange, Gmail, Hotmail, Yahoo, Facebook).


About a Notification Manager memories or events, such as new e -mails in the bottom of the screen, the "notification bar " appears and the program window will be reduced about. The current application is not leave yet interfered with messages. Each alert that requires user input (incoming call, calendar, reminder, alarm clock, etc.) can be muted without being explicitly discarded ( issued ringtone, snooze, etc). The icons remain in this case in the Notification bar HP Palm calls this " unobtrusive notifications" in reference to Apple's " push notification", which only allowed for an immediate answer or a rejection of the notification prior to version 5 of iOS.

App Catalog

The HP App Catalog apps offered for the respective webOS device. The App Catalog for operating system versions for smartphones contains several thousand, the. 3.x version for the HP Touchpad a few thousand applications, including one for the Amazon Kindle and Office programs Once purchased applications for the smartphone install automatically for profile synchronization on the HP Touchpad and run there in an emulated environment. HP introduced in June 2011, a digital magazine called webOS Pivot, which introduced different apps developed in editorial articles. This magazine was discontinued as part of the change in strategy again in November 2011.


The web browser in webOS used as the user interface, the open source WebKit rendering library. The browser can display Adobe Flash content on the website and in screen size and supports multi- touch gestures. About the App Catalog, there is also an alternative browser.

Revision history











November 22, 2009 at O2 Europe The first wireless update ( OTA ) to 1.1.3 version for the European network operator.










Finally, it was recorded for the AT & T Pre Plus in October 2010. The units of some network operators (eg Telcel Mexico) have the update never published. It is the last update that was made ​​available for the Palm Pre and Pixi and the Pixi Plus. In Europe, even in Germany, the Pre Plus device received a weniteres update to version 2.1.

Current operating system version for the Palm Pre, Pre Plus, Pixi and Pixi Plus.











New Application for photos and videos with the front camera on the HP Touchpad. Complement the support to play the open audio formats Ogg Vorbis and FLAC.


Software Development

With an SDK called Mojo Application Framework applications in the languages ​​HTML5, CSS and JavaScript can be developed. 2011 replacement HP Mojo Framework by Enyo with some feature enhancements.

Ares is an additional development environment that can be developed directly in the browser applications. An installation of the SDK is no longer necessary. In order to test the applications, a webOS emulator is integrated in Ares. Ares works with browsers Firefox, Safari and Chrome.

Plug-In Development Kit ( PDK)

To use C or C code in applications since March 2010 is available with the "Plug-In Development Kit " also open the possibility for porting existing applications from other platforms.

WebOS is not backward compatible with Palm OS, but there is an emulator "Classic" for Palm OS programs that can perform according to product manager Paul Cousineau, Palm OS applications on your Pre. The producers of "Classic", the company Motion Apps, has sold the software on Palm and set the distribution of the application. Motion Apps indicates that "Classic" no longer runs on webOS 2.


  • Palm Pre ( webOS 1.x) and Palm Pre Plus ( webOS 1.x and 2.x): The first device that was shipped with webOS was the Palm Pre. Deliveries began on June 6, 2009 in the United States in collaboration with the network operator Sprint Nextel. In Germany, the Palm Pre from 13 October 2009 was to acquire at O2 and Simyo. At CES 2010, the Palm Pre Plus has been presented which unlike its predecessor twice as much memory (512 MB) and disk space had (16 GB).
  • Palm Pixi and Palm Pixi Plus ( webOS 1.x): In autumn 2009, Palm introduced as the second smartphone with webOS, which brought Palm Pixi in the U.S. market. It was distinguished by the fact that it had a keyboard under a reduced capacitive touch screen without slider mechanism. The Palm Pixi Plus was introduced together with the Palm Pre Plus at CES 2010. It was in contrast to his predecessor, Wi-Fi support and was available on O2 and Vodafone in Germany.
  • Palm Pre 2 ( webOS 2.x): The successor of the Palm Pre Plus should be improved processing, for the first time with a screen from the usual high-quality smartphones like the iPhone Corning Gorilla Glass and revised hardware and software some of the criticisms of the previous devices statement wear. Available since October 2010.
  • HP Veer ( webOS 2.x ): A miniaturized version of the Palm Pre 2 with a 2.6 -inch touch screen ( 320x400 pixels) with again updated hardware and software. The HP Veer was the smallest smartphone with its functions, continued to support the HP Touchstone for inductive charging and had a connection for a magnetic charging cable. The unit arrived with a very long delay. With the setting of the development by all HP equipment (60 euros per unit in Germany ) were sold off in 2011 at a greatly reduced price.
  • HP Pre 3 ( webOS 2.x), as successor to the never released in the U.S. Palm Pre 2, the appearance of this unit as a result of the sales launch of the HP Veer was planned. The smartphone with 3.58 -inch touch screen ( 800x480 pixels) finally went only in its GSM version in France and later in Germany and the UK in small numbers in the sale. The already established devices for AT & T and Verizon in the United States could no longer be sold. In Europe, all available units have been sold off (80 euros per unit in Germany ) within a very short time at greatly reduced prices and are no longer available.
  • HP TouchPad ( webOS 3.x), a 9.7 -inch tablet (1024x768 pixel capacitive touchscreen Gorilla Glass ) in versions with 16 GB and 32 GB of storage and 1 GB of RAM, Wi-Fi and Bluetooth and 2 -core processor, the software- in particular, the functions touch to share, to exchange information with webOS phones by tapping with webOS 3.0 and a completely revised version of the software received. The HP touchpad is seamlessly integrated with a connected Bluetooth webOS smartphone in the vicinity. The production of this product has been discontinued by HP a few weeks after the release again and the rest of the devices were at greatly reduced prices first, then sold off in the U.S. and in Europe within a very short time. After this production stop further software updates were delivered.

Acquisition by LG

On 18 August 2011, HP announced under the leadership of Leo Apotheker at the end of tablets and smartphones with webOS. On December 9, 2011, HP's new CEO Meg Whitman, the release of WebOS as open source software known.

In October 2012 it was announced that LG was working on a TV with Open webOS as a software platform. WebOS was purchased in February 2013 by LG. In January 2014 the first televisions were presented with WebOS from LG.