Comment A bit offtopic, but I need to vent (Score 4, Informative) 509
As an example, I use gaim on FreeBSD because its tabbed interface is simply the best I've come across. I would love to use it instead of Trillian when I'm forced into using Windows. But the Windows port of gaim, which uses GTK+/Windows, works horribly. The GTK theme doesn't match my XP settings, widgets draw slowly and work clumsily (tooltips in particular seem to spontaneously appear and refuse to go away, even when the program is minimized!), and all in all it feels like a cheap Wal-Mart knockoff.
GTK+ widgets offer no benefits over standard Windows controls -- they draw slower, they don't match the environment, and Windows is just as themable as GTK is. Going back on-topic, this Qt/Mac port of Konqueror likewise eschews native widgets for the entirely out-of-place Qt look. All I can ask is Why? Wouldn't it be far easier for Qt/ and GTK/Windows or