Prison is a Qt-based barcode abstraction layer/library and provides uniform access to generation of barcodes with data.

KUnitConversion provides functions to convert values in different physical units. It supports converting different prefixes (e.g. kilo, mega, giga) as well as converting between different unit systems (e.g. liters, gallons).

This is a stand-alone implementation of the Kate syntax highlighting engine. It's meant as a building block for text editors as well as for simple highlighted text rendering (e.g. as HTML), supporting both integration with a custom editor as well as a ready-to-use QSyntaxHighlighter sub-class.

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.

KDeclarative provides integration of QML and KDE work spaces. It's comprises two parts: a library used by the C++ part of your application to integrate QML with KDE Frameworks specific features, and a series of QML imports that offer bindings to some of the Frameworks.

Provided are action classes that can be added to toolbars or menus, a wide range of widgets for selecting characters, fonts, colors, actions, dates and times, or MIME types, as well as platform-aware dialogs for configuration pages, message boxes, and password requests.

KDBusAddons provides convenience classes on top of QtDBus, as well as an API to create KDED modules.

As the names suggest they implement a Client respectively a Server API for the Wayland protocol. The API is Qt-styled removing the needs to interact with a for a Qt developer uncomfortable low-level C-API. For example the callback mechanism from the Wayland API is replaced by signals, data types are adjusted to be what a Qt developer expects - two arguments of int are represented by a QPoint or a QSize.

This library implements the framework for KDE parts, which are widgets with a user-interface defined in terms of actions.

KTextWidgets provides widgets for displaying and editing text. It supports rich text as well as plain text.

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.

KWindowSystem provides information about and allows interaction with the windowing system. It provides a high level API, which is windowing system independent and has platform specific implementations. This API is inspired by X11 and thus not all functionality is available on all windowing systems.

In addition to the high level API, this framework also provides several lower level classes for interaction with the X Windowing System.

Breeze provides a freedesktop.org compatible icon theme. It is the default icon theme for the KDE Plasma desktop.

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.

This library provides tools to annotate images.

This library provides primitives to interface with pseudo terminal devices as well as a KProcess derived class for running child processes and communicating with them using a pty.

KNotifyConfig provides a configuration dialog for desktop notifications which can be embedded in your application.

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

KPlotWidget is a QWidget-derived class that provides a virtual base class for easy data-plotting. The idea behind KPlotWidget is that you only have to specify information in "data units", the natural units of the data being plotted. KPlotWidget automatically converts everything to screen pixel units.

KJobWIdgets provides widgets for showing progress of asynchronous jobs.

A library for rendering SVG-based themes with stylesheet re-coloring and on-disk caching.

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.

This framework contains an interface to KWallet, a safe desktop-wide storage for passwords and the kwalletd daemon used to safely store the passwords on KDE work spaces.

KDNSSD is a library for handling the DNS-based Service Discovery Protocol (DNS-SD), the layer of Zeroconf that allows network services, such as printers, to be discovered without any user intervention or centralized infrastructure.