本文来自 GTK+ 的邮件列表，GTK+ 的开发人员对 GTK+ 和 QT 做了简单的比较。

The main differences between QT and GTK+ are:

• Qt is C++ based but it uses C++ in its own way because of its cross-platform nature (through a special preprocessor)
• GTK is C based but it uses its own "object oriented" approach.
• Qt can rely on QtDesigner and KDevelop that, together, make up a real IDE (similar to Visual Studio)
• GTK must rely on Glade only, that is a GUI builder equivalent to QtDesigner. There is nothing like KDevelop for GTK (AFAIK).
• Qt runs (with recompilation) on Linux/Unix, MacOS X and Windows (all versions)
• GTK runs on Linux. There is a porting of the old GTK1.2 for Windows. A Porting for Mac OS X is under development (AFAIK)
• Qt has internal support for scripting (QAS)
• Should you need to add scripting capabilities to a GTK application, you have to embed your own engine (Python, LUA...)
• Qt has integrated data-aware widget for data-centric applications.
• GTK has a separate project (gnome-db) for data-aware widgtes
• Qt-based applications and the KDE desktop "talks" each other via DCOP
• GTK applications and Gnome "talks" each other via CORBA
• Qt has exhaustive bindings for Python and a few other language (maybe Perl and Scheme)
• GTK has exhaustive bindings for C++ (GTKmm), Python (PyGTK) and Ruby. There are less complete bindings for Perl, Scheme, Lua and so on. Have a look at www.gtk.org for a complete listing of the available bindings and their development status.
• Qt has exhaustive documentation and a lot of examples form Trolltech and the KDE team
• GTK has exhaustive documentation and a lot of examples from GTK team
• Qt is freeware on Linux only
• GTK is always freeware (but it is not completely available on Windows and MacOS X)

翻译总结如下所示。

GTK+ 与 QT 的不同主要有：

• QT 基于 C++ 开发，GTK+ 基于 C 语言开发，但采用了面向对象的思想；
• QT 有 QTDesigner 和 KDevelop 等工具，可以组成一个完整的 IDE ，GTK+ 只有 Glade ，一个 GUI builder (相当于QTDesiger)；
• QT 具有很好的跨平台性，支持 Linux/Unix、MacOS X 和 Windows，GTK+ 主要是 Linux 平台，其它平台的支持正在开发中；
• QT 本身支持脚本，GTK+ 需要嵌入自己的脚本引擎；
• QT 为数据密集的应用提供了 data-ware widget，GTK+ 有一个单独的工程 gnome-db
• QT 应用与 KDE 桌面通过 DCOP 通信，GTK+ 应用与 Gnome 通过 CORBA 通 信；
• Qt 支持与 Python、 Perl、Scheme等语言的绑定，GTK 实现了与 C++ (GTKmm), Python (PyGTK) 和 Ruby 的绑定；
• Qt 是双授权，由 Trolltech 公司和社区支持，GTK+ 完全开源，由社区支 持。