You already know Norton Commander / Midnight Commander, or you're a Windows power user willing to invest a weekend to learn it.
farmanager.com – Free and open source (BSD license). far manager
FAR Manager is not for everyone, but if you spend hours daily moving files, editing text, running scripts, or managing servers, it's a productivity superweapon. It's ugly, old-school, and unforgiving – but once the hotkeys are in muscle memory, using a mouse for file management will feel painfully slow. You already know Norton Commander / Midnight Commander,