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# Qt Commercial Editions

Several Editions of Qt are available under a commercial license: Qt Console, Qt Desktop Light, and Qt Desktop. See the Qt Editions page for more information.

You may write commercial, proprietary, or otherwise non-free software only if you have purchased a Commercial Edition of Qt. If you purchase a Commercial Edition, you are entitled to technical support and upgrades.

If you want to develop Free or Open Source software for release using a recognized Open Source license, you can use the Open Source Edition.

Please see the list of supported platforms for up-to-date information about the various platforms and compilers that Qt supports.

On Trolltech's web site, you can find licensing information and price lists for Qt Commercial Editions and other Trolltech products.

To purchase, please visit the online order form.

For further information and assistance, please contact Trolltech sales:

Email: sales@trolltech.com.

Phone, U.S. office (for North America): 1-650-813-1676.

Phone, Norway office (for the rest of the world): +47 21 60 48 00.