Also if i made any changes to the qt framework i would. Everything you need for your entire software development life cycle. Using the digia qt framework lgpl for commercial applications. Gnu general public license usage alternatively, this file may be used under the terms of the gnu general public license version 3. This can make setting up a build environment much more tedious. Today, nokia announced that digia will acquire the qt commercial software licensing and professional services business from nokia. Besides the lgpl license for pyside2, youll have to make sure that you comply with the qt licensing terms. Can i use qt lgpl license and sell my application without. You may distribute such object code under terms of your choice, provided that. The foundation has license agreements with the qt company, digia and nokia.
Digia has no control as to what goes into the lgpl at time of release, only what goes into the commercial version. Digias new growth strategy for 20162019 has been decided. Qt is the fastest and smartest way to produce industryleading software that users love. Because of this, we are now adding lgpl v3 as a licensing option to qt 5. The main problem is how they qtdigia company downplay on how far you can go with free lgpl license. Future of qt brighter after digia buys licensing biz from. Gnu lesser general public license version 3, 29 june 2007 copyright c 2007 free software foundation, inc. Interest qt lgplv3 and qt lgpl exception mailing lists. Digias strategy and financial objectives for 20202022. Digia and qt have demerged into two independent companies starting from 1st of may. Digia is committed to the qt community and all the fixespatches that we work on for desktop and embedded are available for nokia to.
These rights are described in the digia qt lgpl exception 27 version 1. Platform use cases embedded devices microcontrollers mcus internet of things desktop application multiple screens mobile devices why qt. Applications using qt that use the opensource licenses. Digia has announced that it is acquiring the qt project from nokia. The thing is, pyside2 is for using the qt framework with python programs.
The free software foundation may publish revised andor new versions of the gnu lesser general public license from time to time. Digia qt sdk is a software development kit used to create crossplatform applications. The qt company provides businesses with commercially viable development projects, a free 10day qt evaluation including all our commercial packages and components, plus. Just for reference, here is the other wording i have been talking about taken from qt 5. These rights are described in the digia qt lgpl exception. Until recently, this component was licensed under the lgpl license, so i was forced to use the component in the form of a shared library. Initially founded by nokia in 2011, the project is now led by the qt company, a subsidiary of digia since it acquired qt software technologies, trademarks and personnel from nokia. Digia s new growth strategy for 20162019 has been decided. The qt project is an open collaboration effort to coordinate the development of the qt software framework. Free software foundation digia cannot modify the terms lgpl is a copyleft open source software license that is less restrictive than the gpl gnu general public license lgpl still follows the 4 principle freedoms. Qt for application development lets you create applications for desktop and mobile platforms.
Easyhdr uses qt library under lgpl licensing version 5. Nokia is to sell its qt commercial software licensing and professional services business to digia, a company that produces mobile and user experience services and products. Applications using qt that use the opensource licenses need to follow the same license, so their. The company is best known as the owner of the qt application framework, which it acquired from nokia in august 2012, after. This makes the software hackable because they can change the qt framework to include hacks that revel almost anything and to include changing the function of the main developed program. Youve already got the answer that lgpl libraries can be used in commercial software. Revised versions of the gnu lesser general public license. Qt crossplatform software development for embedded. Can i use qt lgpl license and sell my application without any.
Qt is available under the following free software licenses. The commercial qt license gives you the full rights to create and distribute software on your own terms without any. These include product development, as well as the commercial and open source licensing and service business. Qt is a free and opensource widget toolkit for creating graphical user interfaces as well as. Digia and qt have demerged into two companies digias. The commercial qt license gives you the full rights to create and distribute software on your own terms without any open source license obligations. Gnu lesser general public license usage alternatively, this file may be used under the terms of the gnu lesser general public license version 2. Its available only under lgpl, which makes it difficult to use singlebinarydeployment when one needs to release under a more restrictive or less restrictive license. For opensource licensed qt, some specific parts modules are not available under the gnu lgpl version 3, but under the gnu general public license gpl instead. As a special exception to the gnu lesser general public license version 2. Digia is committed to the qt community and all the fixespatches that we work on for desktop and embedded are available for nokia to take into the main branch. Nokia to sell qt commercial licensing rights to digia bgr. Jan 27, 2020 the qt project is an open collaboration effort to coordinate the development of the qt software framework.
In march 2011, nokia sold the commercial licensing part of qt to digia. Juha varelius will take upon the position of president and ceo of qt group plc. Software or, alternatively, in accordance with the terms contained in. Adding lgplv3 will also allow us to release a few other addons that digia before intended to make available solely under the enterprise license. The only real risk this new arrangement poses to the community is the possibility that digia might not make all of its qt improvements available under the permissive lgpl as. In march 2011, nokia sold the commercial licensing part of qt to digia creating qt commercial. Digia and qt have demerged into two companies digias new. They try as hard as possible to create an illusion that if you want to use qt in commercialproprietary apps, you have to go with qt commercial. Qt licensed under the gnu lesser general public license lgpl version 3 is appropriate. Well, as most of you are probably aware of, qt works with a duallicensing model. The documentation provided herein is licensed under the terms of the gnu free documentation license version 1. Comprehensive service in an increasingly connected and datadriven world.
Additionally, we have reached an agreement with digia, who provides qt under the terms of a commercial licensing agreement. Protecting software freedom the qt license update translating. In august 2012, digia announced that it will acquire qt from nokia the qt team started working in digia in september 2012. The only real risk this new arrangement poses to the community is the possibility that digia might not make all of its qt improvements available under the permissive lgpl as nokia historically has. Qt is a large amount of source, which must be present and preinstalled on any machine you use before compiling. I have a commercial application that uses a qt sol. Qts lgpl license relates to qt and qt only, so you can package your code and license it however you like, but unless you plan on buying a qt commercial license, you have to dynamically link to qt. It contains all the qt apis and the qt creator ide for seamless crossplatform development qt for application development is duallicensed under commercial and open source licenses.
Ics whitepaper on the implications of qt under lgpl for commercial and. As an additional permission to the gnu lesser general public license version. The commercial qt license gives you the full rights to create and distribute software on your own. Following the acquisition, digia plans to quickly enable qt on android, ios and windows 8. Nokia sells off qt commercial business to digia zdnet. The sdk was developed by nokia before being acquired by digia, which develops the software along with the qt project. Documentation contributions included herein are the s of their respective owners. Today digia announced a license update from lgpl version 2.
The library is linked dynamically, so it can be replaced with a different or modified version without any need to alter easyhdr executable file. Qt licensed under the gnu lesser general public license lgpl version 3 is appropriate for the development of qt applications provided you can comply with. Qt pronounced cute is a free and opensource widget toolkit for creating graphical user interfaces as well as crossplatform applications that run on various software and hardware platforms such as linux, windows, macos, android or embedded systems with little or no change in the underlying codebase while still being a native application with native capabilities and speed. Initially founded by nokia in 2011, the project is now led by the qt company, a subsidiary of digia since it acquired qt software technologies. It would be really, really nice if digia could provide us with some this is what you can and cannot do with qt under lgpl scenarios as this question keeps cropping up and, to date, i am yet to see fully definitive and satisfactory answers. Digia has announced that existing qt modules will now be covered under the lgplv3 in addition to the lgplv2. Qts commercial license is for when you wish to modify qts source code, and not release the changes you have made to the public.
Nokia sells qt licensing, services business to digia osnews. There does not appear to be anything that would prevent the use of an all os qt license to build the qt library for any mobile platform and distribute applications based on it. Jan 24, 2012 digia has no control as to what goes into the lgpl at time of release, only what goes into the commercial version. Digia to support broader use of qt in consumer electronics, industry machines, and other embedded and desktop software solutions. This version of qt is appropriate for the development of qt applications proprietary or open source provided you can comply with the terms and conditions contained in the gnu lgpl version 2. The kde free qt foundation is an organization with the purpose of securing the availability of the qt toolkit. Qt contains also thirdparty code that is licensed under specific opensource licenses from the original authors. Following the acquisition digia becomes responsible for all the qt activities formerly carried out by nokia. Mar 07, 2011 nokia is to sell its qt commercial software licensing and professional services business to digia, a company that produces mobile and user experience services and products. I want to sell my application which i created using qt and i.