LinuxDevices.com reviews KDE's past licensing issues with Qt. "The proprietary Qt license complicated the licensing of KDE, which
is distributed under the GPL and LGPL -- no one was quite certain
whether it was strictly legal to link it with the
proprietary-licensed Qt. But recent licensing changes by Trolltech
have removed the licensing issues, somewhat tipping the scales
toward Qt -- and, by extension, toward KDE in the desktop world."
January 29, 2001