Install doublecmd-qt by entering the following commands in the terminal:
sudo apt update sudo apt install doublecmd-qt
twin-panel (commander-style) file manager (Qt5)
Double Commander is a cross platform open source file manager with two panels side by side. It is inspired by Total Commander and features some new ideas. . Support for RAR archives can be enabled by installing the libunrar0 package from non-free. . This package contains the Qt5 user interface.