<chapter><title>What is &opie;?</title> <figure><title>&opie; logo</title> <mediaobject> <imageobject> <imagedata fileref="logo-small.png"> </imageobject> </mediaobject> </figure> <para> <ulink url="http://opie.handhelds.org">&opie;</ulink> is a GUI (Graphical User Interface) for the Linux operating system (and might work on other OSes as well). It was originally designed for handheld computers (such as the Compaq/HP &ipaq; and the Sharp &zaurus;), but could function well in other environments requiring a light GUI, such as an old laptop, or an internet kiosk. It is based upon <ulink url="http://www.trolltech.com/products/embedded/index.html">&qt;/Embedded from Trolltech</ulink>, which is in turn a graphical environment designed for embedded applications, based upon the &qt; toolkit. </para> <para> &opie; has been designed for devices with small screens, and a touchscreen input device (ie, only one mouse click, and no constant mouse position), as well as designed to fit in a relatively small amount of storage space (about 5 megabytes for the base libraries and the launcher). </para> </chapter>