Comment on Nginx established as a companyparentComments−X-Istence15yQt is under the LGPL. So long as you do not modify the main libraries you are free to link against it with a proprietary app and can distribute the binaries so long as you also provide source when asked.See: http://qt.nokia.com/products/licensing−nl15yHistorically, that wasn't always the case: http://en.wikipedia.org/wiki/Qt_(framework)#LicensingThe LGPL option was only added in 2009. Prior to that, various licencing mechanisms were used to extract revenue on various platforms.(Eg, at one point the *nix version was GPL'ed but the Windows one wasn't, so you needed to pay to ship it on Windows)
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Qt is under the LGPL. So long as you do not modify the main libraries you are free to link against it with a proprietary app and can distribute the binaries so long as you also provide source when asked.
See: http://qt.nokia.com/products/licensing
Historically, that wasn't always the case: http://en.wikipedia.org/wiki/Qt_(framework)#Licensing
The LGPL option was only added in 2009. Prior to that, various licencing mechanisms were used to extract revenue on various platforms.
(Eg, at one point the *nix version was GPL'ed but the Windows one wasn't, so you needed to pay to ship it on Windows)