| Attica | Open Collaboration Services API | API | LGPLv2.1+ | |
| Baloo | Baloo is a file indexing and searching framework | Development | LGPLv2.1+ | |
| BluezQt | Qt wrapper for BlueZ 5 DBus API | Communication | LGPLv2.1+ | |
| Breeze Icons | Breeze icon theme | Artwork | LGPLv2.1+ | |
| Extra CMake Modules | Extra CMake modules | Development | LGPLv2.1+ | |
| Framework Integration | Workspace and cross-framework integration plugins | Desktop | LGPLv2.1+ | |
| KActivities | Runtime and library to organize the user work in separate activities | Desktop | LGPLv2.1+ | |
| KActivitiesStats | A library for accessing the usage data collected by the activities system. | Desktop | LGPLv2.1+ | |
| KArchive | File compression | Data | LGPLv2.1+ | |
| KAuth | Abstraction to system policy and authentication features | Security, API | LGPLv2.1+ | |
| KBookmarks | Support for bookmarks and the XBEL format | Web | LGPLv2.1+ | |
| KCalendarCore | The KDE calendar access library | LGPLv2.1+ | ||
| KCMUtils | Utilities for working with KCModules | Desktop | LGPLv2.1+ | |
| KCodecs | Text encoding | Text | LGPLv2.1+ | |
| KCompletion | Text completion helpers and widgets | Text, Widgets | LGPLv2.1+ | |
| KConfig | Configuration system | Development | LGPLv2.1+ | |
| KConfigWidgets | Widgets for configuration dialogs | Development, Widgets | LGPLv2.1+ | |
| KContacts | Support for vCard contacts | LGPLv2.1+ | ||
| KCoreAddons | Addons to QtCore | Text, Data | LGPLv2.1+ | |
| KCrash | Support for application crash analysis and bug report from apps | Development | LGPLv2.1+ | |
| KDAV | An DAV protocol implementation with KJobs | LGPLv2.1+ | ||
| KDBusAddons | Addons to QtDBus | Desktop | LGPLv2.1+ | |
| KDeclarative | Provides integration of QML and KDE Frameworks | Desktop, QML | LGPLv2.1+ | |
| KDED | Extensible deamon for providing system level services | Desktop | LGPLv2.1+ | |
| KDELibs 4 Support | Porting aid from KDELibs4 | Development | LGPLv2.1+ | |
| KDesignerPlugin | Tool to generate custom widget plugins for Qt Designer/Creator | Development | LGPLv2.1+ | |
| KDESU | Integration with su for elevated privileges | Security, Desktop | LGPLv2.1+ | |
| KDE WebKit | KDE Integration for QtWebKit | Web | LGPLv2.1+ | |
| KDE DNS-SD | Abstraction to system DNSSD features | Bindings, Communication | LGPLv2.1+ | |
| KDocTools | Documentation generation from docbook | Development, Text | LGPLv2.1+ | |
| KEmoticons | Support for emoticons and emoticons themes | Artwork | LGPLv2.1+ | |
| KF5Umbrella | CMake convenience functions for KDE Frameworks | Development | LGPLv2.1+ | |
| KFileAudioPreview | Preview of audio files | Multimedia | LGPLv2.1+ | |
| KFileMetaData | A file metadata and text extraction library | Data | LGPLv2.1+ | |
| KGlobalAccel | Add support for global workspace shortcuts | Desktop | LGPLv2.1+ | |
| KDE GUI Addons | Addons to QtGui | Widgets | LGPLv2.1+ | |
| KHolidays | Holiday calculation library | Data | LGPLv2.1+ | |
| KHTML | KHTML APIs | Web | LGPLv2.1+ | |
| KI18n | Advanced internationalization framework | Development, Text | LGPLv2.1+ | |
| KIconThemes | Support for icon themes | Artwork | LGPLv2.1+ | |
| KIdleTime | Monitoring user activity | Desktop | LGPLv2.1+ | |
| KImageFormats | Image format plugins for Qt | Graphics, Data | LGPLv2.1+ | |
| KInit | Process launcher to speed up launching KDE applications | Desktop | LGPLv2.1+ | |
| KIO | Resource and network access abstraction | Communication, Data | LGPLv2.1+ | |
| Kirigami | QtQuick plugins to build user interfaces based on the KDE human interface guidelines | Mobile, QML | LGPLv2.1+ | |
| KItemModels | Models for Qt Model/View system | Development | LGPLv2.1+ | |
| KItemViews | Widget addons for Qt Model/View | Widgets, Development | LGPLv2.1+ | |
| KJobWidgets | Widgets for tracking KJob instances | Widgets | LGPLv2.1+ | |
| KJS | Support for JS scripting in applications | Web, Scripting | LGPLv2.1+ | |
| KJSEmbed | Embedded JS | Web, Scripting | LGPLv2.1+ | |
| KMediaPlayer | Plugin interface for media player features | Multimedia | LGPLv2.1+ | |
| KNewStuff | Support for downloading application assets from the network | Data, Communication | LGPLv2.1+ | |
| KNotification | Abstraction for system notifications | Desktop | LGPLv2.1+ | |
| KNotifyConfig | Configuration system for KNotify | Desktop | LGPLv2.1+ | |
| KPackage Framework | Library to load and install packages of non binary files as they were a plugin | Development | LGPLv2.1+ | |
| KParts | Document centric plugin system | Widgets | LGPLv2.1+ | |
| KPeople | Provides access to all contacts and the people who hold them | Communication, Data | LGPLv2.1+ | |
| KPlotting | Lightweight plotting framework | Graphics | LGPLv2.1+ | |
| KPrintUtils | Print dialogs | Printing | LGPLv2.1+ | |
| KPty | Pty abstraction | Communication | LGPLv2.1+ | |
| KQuickCharts | A QtQuick module providing high-performance charts. | LGPLv2.1+ | ||
| Kross | Multi-language application scripting | Scripting | LGPLv2.1+ | |
| KRunner | Parallelized query system | Desktop | LGPLv2.1+ | |
| KService | Advanced plugin and service introspection | Development | LGPLv2.1+ | |
| KTextEditor | Advanced embeddable text editor | Text, Widgets | LGPLv2.1+ | |
| KTextWidgets | Advanced text editing widgets | Text, Widgets | LGPLv2.1+ | |
| KUnitConversion | Support for unit conversion | Data | LGPLv2.1+ | |
| KWallet Framework | Secure and unified container for user passwords | Security | LGPLv2.1+ | |
| KWidgetsAddons | Addons to QtWidgets | Widgets | LGPLv2.1+ | |
| KWindowSystem | Access to the windowing system | Desktop | LGPLv2.1+ | |
| KXMLGUI | User configurable main windows | Widgets | LGPLv2.1+ | |
| KXmlRpcClient | Interaction with XMLRPC services | Communication | LGPLv2.1+ | |
| ModemManagerQt | Qt wrapper for ModemManager API | Communication, Bindings | LGPLv2.1+ | |
| NetworkManagerQt | Qt wrapper for NetworkManager API | Communication, Bindings | LGPLv2.1+ | |
| Oxygen Icons | Oxygen icon theme | Artwork | LGPLv2.1+ | |
| Plasma Framework | Plugin based UI runtime used to write primary user interfaces | Desktop | LGPLv2.1+ | |
| Prison | Barcode abstraction layer providing uniform access to generation of barcodes | Graphics, Printing | LGPLv2.1+ | |
| Purpose | Offers available actions for a specific purpose | Desktop | LGPLv2.1+ | |
| QQC2StyleBridge | QtQuickControls 2 style that integrates with the desktop | LGPLv2.1+ | ||
| Solid | Hardware integration and detection | Development | LGPLv2.1+ | |
| Sonnet | Support for spellchecking | Text | LGPLv2.1+ | |
| Syndication | An RSS/Atom parser library | LGPLv2.1+ | ||
| Syntax Highlighting | Syntax Highlighting | Text | LGPLv2.1+ | |
| ThreadWeaver | High-level multithreading framework | Development | LGPLv2.1+ |
84 libraries listed in group KDE Frameworks.