What to consider the qt framework is available under both open source and commercial licenses this dual-licensing model is based on the principal of quid pro quo – roughly meaning “something for something” simply put, this is how it works: in return for the value you receive from using qt to create your application, you are expected to give back by contributing to qt or buying qt. Qt download open source offline. The installers allow you to download and install the following components: in the online installer, you can select commercial or open source versions of qt, tools, the online installer is available from the qt downloads page offline installation.
qt download open source offline