There is a whole host of orthodox dual-pane file managers: https://en.wikipedia.org/wiki/File_manager#Dual-pane_managers https://en.wikipedia.org/wiki/File_mana

There is a whole host of orthodox dual-pane file managers: https://en.wikipedia.org/wiki/File_manager#Dual-pane_managers https://en.wikipedia.org/wiki/File_manager#Dual-pane_manager.... On Linux, I'm using GNOME Commander, and Midnight Commander in the terminal. On KDE, Krusader is the greatest.