The KDE Frameworks, currently version 5 or KF5, is a collection of 80 libraries that are built on top of the Qt application framework and provides everything from utility classes to asynchronous and network-transparent I/O to additional data model and widgets to desktop-centric integration. If Qt itself doesn't provide a certain functionality or feature, chances are, there's a KDE Framework for that.
While KF5 does serve as the most basic building blocks of KDE software, they can be used by any Qtx application just like any third-party Qt add-on library. Just like any other KDE software, KF5 uses and favors a CMake build system but all frameworks support QMake as well. Many frameworks are available on multiple desktop operating systems such as Linux and Windows and are even available on Android. Be sure to check each framework's documentation for their supported platforms.
KDE, of course, takes software quality seriously but even more so when it comes to KF5. The Frameworks come with quality promises and to make sure you won't need to wait for your favorite bug to get fixed, a new version is released monthly. And since it's free software developed in an open environment, anyone can participate or comment on its development.
|The current version of KDE Frameworks is 5.58.0. Please see the release announcement for more information.|
The KDE Frameworks are also released under the permissive LGPL or BSD/MIT licenses, making them ideal and usable for any type of software.
Each of the KDE Frameworks has a Tier and a Type, as you will see in the API documentation. While not critical to using the frameworks, this organization can help developers in determining the frameworks' dependencies.
Tiers group the frameworks according to what they link to during compilation.
Types, on the other hand, refer to the framework's runtime dependencies:
You can find the API documentation of the Frameworks on api.kde.org.