Alt+Tab lets me only switch between windows belonging to different applications.

I often use about four terminal bound applications at the same time (e.g. IPython, VIM, fish for system and fish for git).

Even using the mouse, clicking the terminal icon on the launcher being offered takes time to decide which is which. But I don't know so far any way to switch in this case using my keyboard only.

How to handle multiple terminals (and instances of same application in general) efficiently using the keyboard?

With respect to the terminal special case - is there a terminal application allowing sperate terminals in tabs?

And the Oscar goes to ...

tmux