> Firefox on Linux (usually). No, linux is usually webkit (which is also what safari is based on). Both Gtk and Qt have webkit-based widgets. I'm not aware of

> Firefox on Linux (usually). No, linux is usually webkit (which is also what safari is based on). Both Gtk and Qt have webkit-based widgets. I'm not aware of a gecko based webview for desktop. Unfortunately, Firefox's technology is even more poorly suited for embedding than chromium's.