Must have package that should be installed by default (if you use Nautilus) :
And another file manager (IMHO better than Nautilus) :
- thunar : for example, you can with a simple right click send files or even directory to thunderbird (strictly impossible with Nautilus), you can launch a term in the current directory, you can paste into the folder trackbar, etc.
How to replace definitely Nautilus by Thunar ? 2 solutions :