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Palm OS (also known as Garnet OS) is a mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs) in 1996. Palm OS was designed for ease of use with a touchscreen-based graphical user interface. It is provided with a suite of basic applications for personal information management. Later versions of the OS have been extended to support smartphones. Several other licensees have manufactured devices powered by Palm OS. Following Palm's purchase of the Palm trademark, the currently licensed version from ACCESS was renamed ''Garnet OS''. In 2007, ACCESS introduced the successor to Garnet OS, called Access Linux Platform and in 2009, the main licensee of Palm OS, Palm, Inc., switched from Palm OS to webOS for their forthcoming devices. == Creator and ownership == Palm OS was originally developed under the direction of Jeff Hawkins at Palm Computing, Inc.〔''Piloting Palm,'' Andrea Butter & David Pogue, Wiley 2002, p. 82.〕 Palm was later acquired by U.S. Robotics Corp.,〔''Piloting Palm,'' chapter 8, ''passim.''〕 which in turn was later bought by 3Com,〔''Piloting Palm,'' pp. 179–189.〕 which made the Palm subsidiary an independent publicly traded company on March 2, 2000.〔(Palm, Inc. Sets IPO Price at $38 per Share ), 3Com / Palm press release, March 1, 2000〕 In January 2002, Palm set up a wholly owned subsidiary to develop and license Palm OS,〔(Palm Completes Formation of Palm OS Subsidiary as Palm Powered Devices Hit 20 Million Sold ), Palm / PalmSource press release, January 21, 2002〕 which was named PalmSource. PalmSource was then spun off from Palm as an independent company on October 28, 2003.〔(PalmSource Spins Out From Palm, Inc. ), PalmSource press release, October 28, 2003〕 Palm (then called palmOne) became a regular licensee of Palm OS, no longer in control of the operating system. In September 2005, PalmSource announced that it was being acquired by ACCESS.〔(ACCESS to Extend Leadership in Mobile Device Software with Acquisition of PalmSource ), PalmSource / ACCESS press release, September 9, 2005〕 In December 2006, Palm gained perpetual rights to the Palm OS source code from ACCESS.〔(Palm Signs Perpetual License for Palm OS Garnet Source Code and Expanded Patent Rights From ACCESS Systems Americas ), Palm press release, December 7, 2006〕 With this Palm can modify the licensed operating system as needed without paying further royalties to ACCESS. Together with the May 2005 acquisition of full rights to the ''Palm'' brand name,〔(palmOne Acquires Rights to Palm Brand ), palmOne press release, May 24, 2005〕 only Palm can publish releases of the operating system under the name 'Palm OS'. As a consequence, on January 25, 2007, ACCESS announced a name change to their current Palm OS operating system, now titled ''Garnet OS''.〔(ACCESS Debuts New ACCESS Powered Mark ), ACCESS press release, January 25, 2007〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Palm OS」の詳細全文を読む スポンサード リンク
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