least three letters of the desired name or description. KRunner shows applications associated with the terms of the search and allows the selection of the desired one. Calculator: Simply enter the desired operation to show the result. It also supports sophisticated expressions. Contacts can search for entries in KDE's address book allowing users to directly open, for example, KMail to write an e-mail. The address of the recipient of your choice is automatically added to the message. Unit Converter converts values between different units of measure. Web history: Search history of recently visited sites in Konqueror. Recent documents: Search for recently opened files. Available Plasma Workspaces Desktop Plasma Desktop was the first workspace that was developed by KDE back then. It was declared mature with the release of KDE SC 4.2. It is designed for desktop PCs and larger laptops. In its default configuration it resembles K Desktop Environment 3 and Microsoft Windows XP but extensive configurability allows radical departures from the default layout. Its technology is a fundamental rewrite of several desktop interaction programs included in previous KDE desktop environments for Unix-like systems, focusing on eye candy and special graphical effects. The Desktop Workspace replaces the previous KDesktop shell, Kicker taskbar and SuperKaramba widget engine used in the K Desktop Environment 3 series with a unified system of widgets that can be configured and replaced with alternative designs. From KDE 4.0 to KDE 4.2, the default theme Oxygen was characterized by dark tones. In KDE 4.3, replaced by the new Air theme, which predominates in transparency and white as base color. New themes for Plasma can be chosen and installed through an authority. Supported widgets This is a list of widgets that the current release version of Plasma supports. Not all widgets are supported by default in all Linux distributions; some may require different packages, or even a recompilation of Plasma. First generation native widgets (In C++, JavaScript, Ruby or Python. In many distributions, the Ruby and Python bindings must be downloaded separately as packages) Second generation native widgets written in QML. Apple Dashboard widgets SuperKaramba widgets – used in KDE 3. Web widgets (supports HTML and JavaScript) Previous Plasma Workspaces releases also supported Edje gadgets and E17 modules. Support for those was developed in 2008 but later, in 2010, removed. Google Gadgets were also supported. After Google announced to discontinue its two services that utilize Gadgets – Google