In 2000, Qt 2.2 was released under the GPL v2, ending all controversy regarding GPL compatibility.<ref name="Qt2.2-GPL">{{cite web|url=http://www.linuxplanet.com/linuxplanet/reports/2269/1/ |title=Trolltech to Release Qt Under GPL - Decision Alters Linux GUI Landscape - Reports |publisher=LinuxPlanet |date=2000-09-04 |access-date=2013-05-08}}</ref>
On {{date|2008-01-28|format=dmy}} January 2008 Nokia announced to acquire Trolltech.<ref>{{cite web|url=http://www.nokia.com/A4136001?newsid=1185531|title=Nokia to acquire Trolltech to accelerate software strategy |date=28 January 2008|access-date=28 January 2008}}</ref><ref>{{cite web|last=Paul |first=Ryan |url=https://arstechnica.com/information-technology/2008/01/nokia-buys-trolltech-will-become-a-patron-of-kde/ |title=Nokia to buy Trolltech, will become a patron of KDE |publisher=Ars Technica |date=2008-01-28 |access-date=2013-05-08}}</ref>
On {{date|2009-01-14|format=dmy}} January 2009 Qt version 4.5 was [[Software relicensing|relicensed]], adding [[LGPL]] as licensing option.<ref>{{cite web|url=http://dot.kde.org/2009/01/14/qt-everywhere-45-be-relicensed-lgpl |title=Qt Everywhere: 4.5 To Be Relicensed As LGPL |date=14 January 2009 |access-date=2013-05-08}}</ref>
The Qt Project was founded on {{date|2011-10-21|format=dmy}} October 2011.<ref name="open governance" /><ref>{{cite web|last=Meyer |first=David |url=http://www.zdnet.com/nokia-gives-qt-open-source-governance-3040094261/ |title=Nokia gives Qt open-source governance |publisher=ZDNet |date=2011-10-24 |access-date=2013-05-08}}</ref> In August 2012 Digia announced to acquire all rights to Qt and take Nokia's role within the Qt Project.<ref name="DigiaQt" />
