Nautilus

Files (formerly Nautilus) is an open source file manager application that allows users to access their file system under any Linux-based operating system. It is mostly used on the GNOME desktop environment and lets the users to do basic file operations (copy, paste, remove, rename or move).  It split into two parts, a sidebar and the main file viewer. The sidebar offers quick access to Places, Devices and Network locations, and bookmarks. The program is distributed as a single source archive, which can be configure, compiled and installed on almost any Linux OS.