Commander One is a dual pane file manager for macOS, created entirely in Swift.

Double Commander is a cross platform open source file manager with two panels side by side.

Far Manager is a program for managing files and archives in Windows operating systems.

fman is a dual-pane file manager for Windows, macOS and Linux.

FreeCommander is a freeware file manager with built-in FTP client, archive handling, multi-rename, wipe files and MD5 checksums.

Just Manager is a multi-tabbed multi-pane file manager for the Windows.

Dolphin is a lightweight file manager. It has been designed with ease of use and simplicity in mind, while still allowing flexibility and customization.

Explorer++ is a free and open-source navigational file manager for Microsoft Windows. It features multi-tabbed panes, bookmarks menu, and a customizable user …

Nimble Commander is a dual-pane mac file manager with classic design, charged for power users.

ForkLift is a file transfer software, It allows you to transfer files using FTP, SFTP, FXP, WebDAV, Amazon S3 and even Bluetooth.

GNOME Commander is a two-panel graphical file manager for GNOME.

Midnight Commander is a visual file manager, licensed under GNU General Public License and therefore qualifies as Free Software.