The commercial license of Qt is compatible with the terms and conditions of all the leading application stores and thus typically the best choice for distributing a closed source application in various application stores. Products distributed under the commercial version of Qt must also be developed under the commercial version of Qt. If you have already started the development with an open-source version of Qt and wish to move to a commercial license you need to have a written explicit permission from The Qt Company to facilitate this change.
The Qt Company reserves the right to grant the permission at its own discretion. If you are unsure of which license or version to use when you start development, we recommend you contact The Qt Company to advise you on the best choice based on your development needs. Yes, it is possible to use both LGPLv2.
Doing this does not require changing license in either of the libraries, and it is possible to select a proprietary license for the application, if desired. If LGPLv2.
KDE is an international free software community, founded in , producing an integrated set of cross-platform applications for desktop and mainly known for its Plasma Desktop environment, which is provided as the default work environment on many Linux distributions. KDE software is based on the Qt framework.
In the early days of Qt, the KDE project and community was the biggest driving force in building the developer ecosystem around Qt. In the very early days, Qt was already dual-licensed, but the source code was available under proprietary open source licenses. Compromises with KDE were sought to ensure that Qt would be available for their use under appropriate open source licensing even if Trolltech the company that founded Qt would be bought or go bankrupt. The license agreement has been updated couple of times over the years, mainly because of acquisitions around Qt or updates to licenses and platforms.
If software using these open source licensed libraries does not fully comply with the license obligations you will lose your license and related distribution rights.
It depends on how you license and distribute your product. You will need to fulfill the license obligations for these licenses when using Qt in your product.
Both licenses have the same intention, namely to protect the freedom of users to use and modify the software licensed under LGPL. LGPLv3 makes this intention very explicit. You have to provide means to the end user to install a modified version of the library licensed under LGPLv3 and run your software using that modified library.
In practice, this for example refers to:. The above freedoms cannot in any way be restricted by other licensing terms. If an application is not fully following all the obligations as outlined above, it is not allowed to be distributed at all. Usually, not. When using the commercially licensed version of Qt, we provide almost all of Qt under a commercial license terms.
So when using these modules, you will need to fulfill the license obligations of LGPLv2. Please also note that you can avoid using Qt Script, as the Qt Qml module contains a fully functional JavaScript engine that can be used instead. As a commercial license user, in practice, you only need to consider license obligations of LGPLv2.
Looking for Qt Creator 6. It can be found from here. Offline Qt Downloads. Qt6 source packages 5. Qt6 Source Packages Qt 6. Older Qt Versions All older versions of Qt are available in the archive. Linux Host Qt 5. Qt Creator Qt Creator 5.
The unstable PPA supports Ubuntu Packages are maintained by Cristian Greco. See this page for more information. You can find more information here. It is packaged by Ahmad Samir. To install it, make sure the online repositories are configured correctly then install it either:. One-click install here. RPM packages are maintained by Leigh Scott. The slackbuild script is maintained by David Woodfall. Eric Hameleers is also maintaining binary packages for slackware. Those are available there.
RPM packages are available here. More information about the port can be found on the FreshPorts website. To install qBittorrent, you should issue the following commands:. Current stable version: qBittorrent v4. Current version: qBittorrent v4.
0コメント