This operating system, designed for mobile devices, with associated libraries, user interface frameworks and reference implementations of common tools.

The BlackBerry is a wireless handheld device supports e-mail, mobile telephone, text messaging, web browsing and other wireless information services.

Windows Mobile is a compact operating system combined with a suite of basic applications for mobile devices based on the Microsoft Win32 API.

Palm OS is an fully ARM-native, 32-bit operating system made by PalmSource, Inc. for personal digital assistants (PDAs) manufactured by various licensees.

A Pocket PC is a computer in a handheld size that runs in Microsoft Windows Mobile OS.It has many capabilities of modern desktop PCs & can also be used with many other add-ons like GPS receivers .

A Tablet PC is a notebook- or slate-shaped mobile computer with the capabilities of being written on through the use of digitizing tablet technology or a touch screen.

Linux is a free open-source powerful, low-cost operating system operating system for running servers based on Unix.