KF5 advanced internationalization framework

https://api.kde.org/ki18n-index.html

KF5 library for handling icons in applications

https://api.kde.org/kiconthemes-index.html

KF5 library for monitoring user activity

https://api.kde.org/kidletime-index.html

KF5 library providing support for additional image formats

https://api.kde.org/kimageformats-index.html

KF5 process launcher to speed up launching KDE applications

https://api.kde.org/kinit-index.html

KF5 resource and network access abstraction

https://api.kde.org/kio-index.html

QtQuick based components set

https://api.kde.org/kirigami2-index.html

KF5 models for Qt Model/View system

https://api.kde.org/kitemmodels-index.html

KF5 widget addons for Qt Model/View

https://api.kde.org/kitemviews-index.html

KF5 widgets for tracking KJob instance

https://api.kde.org/kjobwidgets-index.html

KF5 library providing an ECMAScript interpreter

https://api.kde.org/kjs-index.html

KF5 library for binding JavaScript objects to QObjects

https://api.kde.org/kjsembed-index.html

KF5 library for downloading application assets from the network

https://api.kde.org/knewstuff-index.html

KF5 abstraction for system notifications

https://api.kde.org/knotifications-index.html

KF5 configuration system for KNotify

https://api.kde.org/knotifyconfig-index.html

KF5 library to load and install packages

https://api.kde.org/kpackage-index.html

KF5 document centric plugin system

https://api.kde.org/kparts-index.html

KF5 library providing access to contacts

https://api.kde.org/kpeople-index.html

KF5 lightweight plotting framework

https://api.kde.org/kplotting-index.html

KF5 pty abstraction

https://api.kde.org/kpty-index.html

KF5 QtQuick plugin providing high-performance charts

https://api.kde.org/kquickcharts-index.html

KF5 parallelized query system

https://api.kde.org/krunner-index.html

KF5 advanced plugin and service introspection

https://api.kde.org/kservice-index.html

KF5 advanced embeddable text editor

https://api.kde.org/ktexteditor-index.html

KF5 advanced text editing widgets

https://api.kde.org/ktextwidgets-index.html

KF5 library for unit conversion

https://api.kde.org/kunitconversion-index.html

KF5 secure and unified container for user passwords

https://api.kde.org/kwallet-index.html

KF5 Client and Server library wrapper for the Wayland libraries

https://api.kde.org/frameworks/kwayland/html/index.html

KF5 addons to QtWidgets

https://api.kde.org/kwidgetsaddons-index.html

KF5 library for access to the windowing system

https://api.kde.org/kwindowsystem-index.html

KF5 user configurable main windows

https://api.kde.org/kxmlgui-index.html

KF5 interaction with XMLRPC services

https://api.kde.org/kxmlrpcclient-index.html

KF5 plugin based UI runtime used to write user interfaces

https://api.kde.org/plasma-framework-index.html

API to produce barcodes

https://api.kde.org/prison-index.html

Qt QuickControl2 style for KDE

https://api.kde.org/qqc2-desktop-style-index.html

KF5 hardware integration and detection

https://api.kde.org/solid-index.html

KF5 plugin-based spell checking library

https://api.kde.org/sonnet-index.html

KDE RSS feed handling library

https://api.kde.org/syndication-index.html

KF5 syntax highlighting engine for structured text and code

https://api.kde.org/syntax-highlighting-index.html

KF5 helper for multithreaded programming

https://api.kde.org/threadweaver-index.html

Open Collaboration Service client library

https://api.kde.org/attica-index.html

File indexing and file search framework for KDE Plasma

https://api.kde.org/baloo-index.html

Default KDE icon theme

https://api.kde.org/breeze-icons-index.html

Extra modules and scripts for CMake

https://api.kde.org/frameworks/extra-cmake-modules/html/index.html

Scripts and data for building API documentation (dox)

https://api.kde.org/kapidox-index.html

Reading, creating, and manipulating file archives

https://api.kde.org/frameworks/karchive/html/index.html

Execute actions as privileged user

https://api.kde.org/kauth-index.html

Bookmarks management library

https://api.kde.org/kbookmarks-index.html

Provides access to and handling of calendar data

https://api.kde.org/kcalendarcore-index.html

Utilities for KDE System Settings modules

https://api.kde.org/kcmutils-index.html