then you can tell me which companies use Qt as primary development language besides nokia?
Qt is most notably used in Autodesk Maya,[9][10], Adobe Photoshop Elements, OPIE, Skype, VLC media player,[11] VirtualBox, and Mathematica,[12] and by the European Space Agency,[13] DreamWorks,[14][15] Google, HP,[16] KDE[17], Lucasfilm,[18] Panasonic,[19] Philips,[20] Samsung,[21] Siemens,[22] Volvo,[23] and Walt Disney Animation Studios.[24]