I often have more than ten windows open at the same time and some of them are of the same applications, notably gnome-terminal.
Often when I am currently on one terminal, I just want to get to another terminal. With Alt-Tab you have to choose from windows of all the applications, which is a pain. Even with Gnome3 which groups windows by applications and gives preview of windows with Alt-` it isn't enough because it's hard to distinguish terminal windows from previews. You can only tell which terminal does what when the full view is shown in most cases.
So is there an application/windowing system/gnome shortcut that shows you only other windows of the same application when you are switching?