KAlgebra is a calculator that lets you plot different types of 2D and 3D functions and to calculate easy (and not so easy) calculations, such as addition, trigonometric functions or derivatives.

Marble is similar to a desktop globe. At closer scale it becomes a world atlas, while OpenStreetMap takes the user to street level. It supports searching for places of interest, viewing Wikipedia articles, creating routes by drag and drop and more.

This package provides a QtQuick plugin to render beautiful and interactive charts.

KTouch is an aid for learning how to type with speed and accuracy. It provides a sample text to type and indicates which fingers should be used for each key. A collection of lessons are included for a wide range of different languages and keyboard layouts, and typing statistics are used to dynamically adjust the level of difficulty.

LabPlot is a tool for interactive graphing and analysis of scientific data. It provides an easy way to create, manage and edit plots and to perform data analysis.

The Qt Cryptographic Architecture (QCA) provides a straightforward and cross-platform API for a range of cryptographic features, including SSL/TLS, X.509 certificates, SASL, OpenPGP, S/MIME CMS, and smart cards.

KConfigWidgets provides easy-to-use classes to create configuration dialogs, as well as a set of widgets which uses KConfig to store their settings.

Solid is a device integration framework. It provides a way of querying and interacting with hardware independently of the underlying operating system.

This framework consists of the following components:

• Libraries for use in applications.

• QML bindings for the above.

• A server application.

• A management and analytics application.

bluez-qt is a Qt-style library for accessing the bluez Bluetooth stack. It is used by the KDE Bluetooth stack, BlueDevil.

This framework implements a lot of file management functions. It supports accessing files locally as well as via HTTP and FTP out of the box and can be extended by plugins to support other protocols as well. There is a variety of plugins available, e.g. to support access via SSH. The framework can also be used to bridge a native protocol to a file-based interface. This makes the data accessible in all applications using the KDE file dialog or any other KIO enabled infrastructure.

Sonnet is a plugin-based spell checking library for Qt-based applications. It supports several different plugins, including HSpell, Enchant, ASpell and HUNSPELL.

This package provides library that is used when writing accessibility clients such as screen readers.

KCMUtils provides various classes to work with KCModules. KCModules can be created with the KConfigWidgets framework.

KService provides a plugin framework for handling desktop services. Services can be applications or libraries. They can be bound to MIME types or handled by application specific code.

KXMLGUI provides a framework for managing menu and toolbar actions in an abstract way. The actions are configured through a XML description and hooks in the application code. The framework supports merging of multiple descriptions for integrating actions from plugins.

KItemViews includes a set of views, which can be used with item models. It includes views for categorizing lists and to add search filters to flat and hierarchical lists.

KGlobalAccel allows you to have global accelerators that are independent of the focused window. Unlike regular shortcuts, the application's window does not need focus for them to be activated.

The plasma framework provides QML components, libplasma and script engines.

KI18n provides functionality for internationalizing user interface text in applications, based on the GNU Gettext translation system. It wraps the standard Gettext functionality, so that the programmers and translators can use the familiar Gettext tools and workflows.

KI18n provides additional functionality as well, for both programmers and translators, which can help to achieve a higher overall quality of source and translated text. This includes argument capturing, customizable markup, and translation scripting.

This package provides Kirigami components usable by both touch and desktop experiences.

KJobWIdgets provides widgets for showing progress of asynchronous jobs.

Kirigami is a set of high level QtQuick components looking and feeling well on both mobile and desktop devices. They ease the creation of applications that follow the Kirigami Human Interface Guidelines.

Attica is a Qt library that implements the Open Collaboration Services API version 1.6.

It grants easy access to the services such as querying information about persons and contents. The library is used in KNewStuff3 as content provider. In order to integrate with KDE's Plasma Desktop, a platform plugin exists in kdebase.

The REST API is defined here: http://freedesktop.org/wiki/Specifications/open-collaboration-services/