I kinda feel like Gnome&#x2F;GTK peaked about 2001 or 2002, and has been in a steady decline ever since.  OTOH, KDE&#x2F;QT hit a local maxima around the same time, then dropped off, but has been improving for the past couple of years (with a few small ups and downs mixed in).<p>I&#x27;ve switched to KDE Plasma desktop on Fedora as my primary work environment now and couldn&#x27;t be happier.  If I wanted to write a native X app now, I&#x27;d definitely be thinking QT.<p>When QT first switched to LGPL, I hoped it would result in an explosion of interest in that environment. In hindsight, &quot;explosion&quot; would probably be an overstatement, but the K&#x2F;QT world does seem to have been growing and improving since then.