Tux Commander is an opensource GTK2 file manager. Developed by Tomáš Bžatek
License: Open Source
Apps available for Linux Xfce Discontinued
fman is a dual-pane file manager for Windows, macOS and Linux. Developed by Michael Herrmann
License: Commercial
Apps available for Mac OS X Windows Linux
Tux Commander offers a more robust feature set with dual-pane support and a built-in terminal, making it suitable for power users. fman, on the other hand, focuses on speed and minimalism, with a strong emphasis on customization through plugins.