uu27itu: cool backgrounds for your desktop

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It is not open source, though it contains some. Both to use the device or to develop through the maemo SDK (only way unless you stick to scripting languages already in the device), proprietary software from Nokia is mandatory.

Maemo is mostly based on open source code, and has been developed by Maemo Devices within Nokia in collaboration with many open source projects such as the Linux kernel, Debian, and GNOME. Maemo is based on Debian GNU/Linux and draws much of its GUI, frameworks, and libraries from the GNOME project. It uses the Matchbox window manager, and the GTK-based Hildon as its GUI and application framework.

At the Mobile World Congress in February 2010, it was announced that the Maemo project would be merging with Moblin to create the MeeGo mobile software platform.

The UI in Maemo 5 has changed with respect to its predecessors. It provides four fully customizable (add/remove widgets, move widgets around, change the background, shortcut to applications/contacts) "Home" screens, called Panorama Desktop. Switching from one desktop to the others is done by sliding one's finger horizontally on the background. The dashboard is accessed via the upper left icon and shows all the running applications, in a manner similar to the Exposé feature in Apple's Mac OS X operating system. From the dashboard, running applications can be brought back to fullscreen by tapping the preview window or applications can be closed by tapping an X-symbol located in the top right corner of the preview window, similar to the concept of closing applications in other operating systems. The application launcher, where all the installed applications can be launched, can be accessed as well from the dashboard by tapping the same area again in the upper left corner of the screen which invokes the dashboard. If no task or application is running in the background, tapping the top left icon skips the dashboard and directly displays the application launcher.