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KD Soap is a Qt-based client-side and server-side SOAP component.

It can be used to create client applications for web services and also provides the means to create web services without the need for any further component such as a dedicated web server.

KD Soap targets C++ programmers who use Qt in their applications.

For more information, see

Using KD Soap

KD Soap requires Qt 5.9.0 or newer, and a compiler with C++11 support. Qt6 support is added starting with KD Soap version 2.0, and requires a compiler with C++17 support.

See INSTALL.txt for installation instructions using CMake.

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Get Involved

KDAB will happily accept external contributions.

Please submit your contributions or issue reports from our GitHub space at

Thanks to our contributors.


The KD Soap Software is © Klarälvdalens Datakonsult AB (KDAB), and is available under the terms of the MIT license.

Contact KDAB at for any licensing queries.

Note that this project requires the 3rd party 'libkode' submodule that is licensed separately with LGPL-2.0-or-later; however, libkode is used for code-generation only and the resulting code can be made available under any license.

Various other freely distributable files are contained in the unittests and are not used in the library code itself.

About KDAB

KD Soap is supported and maintained by Klarälvdalens Datakonsult AB (KDAB).

The KDAB Group is the global No.1 software consultancy for Qt, C++ and OpenGL applications across desktop, embedded and mobile platforms.

The KDAB Group provides consulting and mentoring for developing Qt applications from scratch and in porting from all popular and legacy frameworks to Qt. We continue to help develop parts of Qt and are one of the major contributors to the Qt Project. We can give advanced or standard trainings anywhere around the globe on Qt as well as C++, OpenGL, 3D and more.

Please visit to meet the people who write code like this.

KD SOAP and the KD SOAP logo are registered trademarks of Klaralvdalens Datakonsult AB in the European Union, the United States, and/or other countries. Other product and company names and logos may be trademarks or registered trademarks of their respective companies.