Open source licencing
The Qt library can be used under open source licencing using the LGPL licence. Some parts ar GPL, but most is LGPL, so your application source code can remain proprietary as long as you don’t use the GPL bits. See these Qt pages:
https://www.qt.io/download-open-source
https://www.qt.io/licensing/open-source-lgpl-obligations
Downloading the open source library
https://www.qt.io/download-open-source#source
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We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
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