Digia and qt have demerged into two companies digias new. Because of this, we are now adding lgpl v3 as a licensing option to qt 5. These rights are described in the digia qt lgpl exception version 1. I want to sell my application which i created using qt and i. As an additional permission to the gnu lesser general public license version.
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. Gnu general public license usage alternatively, this file may be used under the terms of the gnu general public license version 3. The main problem is how they qt digia company downplay on how far you can go with free lgpl license. 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. The foundation has license agreements with the qt company, digia and nokia. Documentation contributions included herein are the s of their respective owners. Protecting software freedom the qt license update translating. With the commercial license you also have access to the official qt support and close strategic relationship with the qt company to make sure your development goals are met. The sdk was developed by nokia before being acquired by digia, which develops the software along with the qt project. Easyhdr uses qt library under lgpl licensing version 5. Everything you need for your entire software development life cycle. 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 contains also thirdparty code that is licensed under specific opensource licenses from the original authors. Notice to the annual general meeting 2020 of digia plc.
Besides the lgpl license for pyside2, youll have to make sure that you comply with the qt licensing terms. Digia has announced that it is acquiring the qt project from nokia. Download a free trial of the qt framework, tools for desktop and embedded development, plus other enterprise addons. It is also available as a commercial license from digia. Nokia sells off qt commercial business to digia zdnet.
Jul 20, 20 using the digia qt framework lgpl for commercial applications july 20, 20 july 20, 20 baltazaar this post is targeted at any developer that needs a good framework to develop true cross platform applications. Just for reference, here is the other wording i have been talking about taken from qt 5. The kde free qt foundation is an organization with the purpose of securing the availability of the qt toolkit. Youve already got the answer that lgpl libraries can be used in commercial software. Qt is a large amount of source, which must be present and preinstalled on any machine you use before compiling. 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. Jan 27, 2020 the qt project is an open collaboration effort to coordinate the development of the qt software framework. I have a commercial application that uses a qt solutions component. I have a commercial application that uses a qt sol. The free software foundation may publish revised andor new versions of the gnu lesser general public license from time to time. The thing is, pyside2 is for using the qt framework with python programs. You may distribute such object code under terms of your choice, provided that.
Nokia sells qt licensing, services business to digia osnews. The company is best known as the owner of the qt application framework, which it acquired from nokia in august 2012, after. Following the acquisition digia becomes responsible for all the qt activities formerly carried out by nokia. 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. Juha varelius will take upon the position of president and ceo of qt group plc.
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 is a free and opensource widget toolkit for creating graphical user interfaces as well as. Digia has announced that existing qt modules will now be covered under the lgplv3 in addition to the lgplv2. Qt crossplatform software development for embedded. 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. Revised versions of the gnu lesser general public license. 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. Qts commercial license is for when you wish to modify qts source code, and not release the changes you have made to the public. 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. 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. The main problem is how they qtdigia company downplay on how far you can go with free lgpl license. As a special exception to the gnu lesser general public license version 2. In march 2011, nokia sold the commercial licensing part of qt to digia.
Ics whitepaper on the implications of qt under lgpl for commercial and. Adding lgplv3 will also allow us to release a few other addons that digia before intended to make available solely under the enterprise license. 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. 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. The commercial qt license gives you the full rights to create and distribute software on your own terms without any.
Qt is available under the following free software licenses. 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. Today digia announced a license update from lgpl version 2. Digia s new growth strategy for 20162019 has been decided. Digia qt sdk is a software development kit used to create crossplatform applications. Gnu lesser general public license version 3, 29 june 2007 copyright c 2007 free software foundation, inc. These rights are described in the digia qt lgpl exception. Following the acquisition, digia plans to quickly enable qt on android, ios and windows 8. 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. As an additional permission to the gnu lesser general public license version 2. Digia and qt have demerged into two companies digias. Digias strategy and financial objectives for 20202022. The documentation provided herein is licensed under the terms of the gnu free documentation license version 1. In august 2012, digia announced that it will acquire qt from nokia the qt team started working in digia in september 2012.
These rights are described in the digia qt lgpl exception 27 version 1. Digia to support broader use of qt in consumer electronics, industry machines, and other embedded and desktop software solutions. In march 2011, nokia sold the commercial licensing part of qt to digia creating qt commercial. Qt licensed under the gnu lesser general public license lgpl version 3 is appropriate. Digia and qt have demerged into two independent companies starting from 1st of may. Additionally, we have reached an agreement with digia, who provides qt under the terms of a commercial licensing agreement. 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. Gnu lesser general public license usage alternatively, this file may be used under the terms of the gnu lesser general public license version 2. 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. 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. Using the digia qt framework lgpl for commercial applications. Well, as most of you are probably aware of, qt works with a duallicensing model.
Also if i made any changes to the qt framework i would. Comprehensive service in an increasingly connected and datadriven world. The commercial qt license gives you the full rights to create and distribute software on your own terms without any open source license obligations. 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. Platform use cases embedded devices microcontrollers mcus internet of things desktop application multiple screens mobile devices why qt. 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.
Digia is committed to the qt community and all the fixespatches that we work on for desktop and embedded are available for nokia to. Nokia to sell qt commercial licensing rights to digia bgr. Future of qt brighter after digia buys licensing biz from. Interest qt lgplv3 and qt lgpl exception mailing lists. This can make setting up a build environment much more tedious. Qt for application development lets you create applications for desktop and mobile platforms.
Software or, alternatively, in accordance with the terms contained in. 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. Today, nokia announced that digia will acquire the qt commercial software licensing and professional services business from nokia. Can i use qt lgpl license and sell my application without. Qt is the fastest and smartest way to produce industryleading software that users love. The commercial qt license gives you the full rights to create and distribute software on your own.
These include product development, as well as the commercial and open source licensing and service business. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. 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. Can i use qt lgpl license and sell my application without any. The qt company provides businesses with commercially viable development projects, a free 10day qt evaluation including all our commercial packages and components, plus.