The Quick Charts module provides a set of charts that can be used from QtQuick applications for both simple display of data as well as continuous display of high-volume data.

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/

This framework contains scripts and data for building API documentation (dox) in a standard format and style for KDE.

For the actual documentation extraction and formatting the Doxygen tool is used, but this framework provides a wrapper script to make generating the documentation more convenient (including reading settings from the target framework or other module) and a standard template for the generated documentation.

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

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.

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.

KPeople offers unified access to our contacts from different sources, grouping them by person while still exposing all the data. KPeople also provides facilities to integrate the data provided in user interfaces by providing QML and Qt Widgets components. The sources are plugin-based, allowing to easily extend the contacts collection.

This library provides access to and handling of calendar data. It supports the standard formats iCalendar and vCalendar and the group scheduling standard iTIP.

A calendar contains information like incidences (events, to-dos, journals), alarms, time zones, and other useful information. This API provides access to that calendar information via well known calendar formats iCalendar (or iCal) and the older vCalendar.

The KDE GUI addons provide utilities for graphical user interfaces in the areas of colors, fonts, text, images, keyboard input.

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

This library provides tools to annotate images.

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

KJobWIdgets provides widgets for showing progress of asynchronous jobs.

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.

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

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.

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

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.

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

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

KTextTemplate is to make it easier for application developers to separate the structure of documents from the data they contain.

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

pulseaudio-qt is a Qt-style wrapper for libpulse. It allows querying and manipulation of various PulseAudio objects such as Sinks, Sources and Streams. It does not wrap the full feature set of libpulse.

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.