KArchive provides classes for easy reading, creation and manipulation of archive formats like ZIP and TAR.

It also provides transparent compression and decompression of data, like the GZip format, via a subclass of QIODevice.

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

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

The Package framework lets the user install and load packages of non binary content such as scripted extensions or graphic assets, as if they were traditional plugins.

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.

This library provides a C++ API that determines holiday and other special events for a geographical region.

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.

The Plasma workspace provides an application called KRunner which, among other things, allows one to type into a text area which causes various actions and information that match the text appear as the text is being typed.

KJobWIdgets provides widgets for showing progress of asynchronous jobs.

syndication supports RSS (0.9/1.0, 0.91..2.0) and Atom (0.3 and 1.0) feeds. The library offers a unified, format-agnostic view on the parsed feed, so that the using application does not need to distinguish between feed formats.

KNotification is used to notify the user of an event. It covers feedback and persistent events.

Provides tools to generate documentation in various format from DocBook files.

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

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.

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

KAuth provides a convenient, system-integrated way to offload actions that need to be performed as a privileged user to small set of helper utilities.

The Package framework lets the user install and load packages of non binary content such as scripted extensions or graphic assets, as if they were traditional plugins.

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

KDED stands for KDE Daemon. KDED runs in the background and performs a number of small tasks. Some of these tasks are built in, others are started on demand.

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

This framework helps implement autocompletion in Qt-based applications. It provides a set of completion-ready widgets, or can be integrated it into your application's other widgets.

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.

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

KTextEditor provides a powerful text editor component that you can embed in your application, either as a KPart or using the KF5::TextEditor library.