The Qt Company (formerly known as Digia, Qt, Qt Development Frameworks, Qt Software, Trolltech and as Quasar Technologies) is an Oslo, Norway-based software company best known for its Qt toolkit and application framework.
Qt Development Frameworks (ранее известна как Qt Software, Trolltech и как Quasar Technologies) — компания по производству программного обеспечения, базируется в Осло, Норвегия.