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# Qt Commercial Edition

The Qt Commercial Edition is the commercial version of Qt.

You may write commercial, proprietary, or otherwise non-free software only if you have purchased the Qt Commercial Edition. The purchase of the Qt Commercial Edition includes technical support and upgrades. Qt for Microsoft Windows is only available in the Qt Commercial Edition.

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.

Qt is supported on the following platforms:

- Microsoft Windows -- 95, 98, NT 4.0, ME, 2000, and XP
- Unix/X11 -- Linux, Sun Solaris, HP-UX, HP Tru64 UNIX, IBM AIX, SGI IRIX and many others
- Mac OS X -- Mac OS X 10.2+
- Qt/Embedded -- Linux platforms with framebuffer support.

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

To purchase, please visit the Trolltech webshop. In the webshop, you can generate a Purchase Order, order a quote, or buy directly using a credit card.

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.