About GNOME on Ubuntu
Ubuntu Desktop comes installed with a slightly modified version of the GNOME Desktop Environment. Generally, this desktop guide will make references to GNOME as it is published by GNOME's developers. Here is a list of the notable differences between GNOME on Ubuntu and "Vanilla" GNOME.
Ubuntu comes with Firefox instead of the GNOME Web browser.
Ubuntu comes with the Remmina remote desktop client instead of GNOME Connections.
The AppIndicators extension is included. This extension will enable icons in the top right corner of some applications.
The Ubuntu Dock extension is included. This extension provides the left sidebar for running applications.
The Desktop Icons NG extension is included. This extension enables the use of icons on the desktop.
In addition to Ubuntu desktop wallpapers, the default theme is Yaru and the default font is Ubuntu.
Minimize and maximize buttons are included on window title bars.