"Sigma File Manager" is a free, open-source, quickly evolving app
Native Midnight Commander 4.8.30 for Windows/Win32
Vifm is a curses file manager with Vim-like everything.
The missing terminal file browser for X
The command line file manager
File manager for Unix (X11/Motif)
minix3 DECO file system browser for book_ISO_3_1_0
Dopus5 for all Amiga platforms (AmigaOS3, AmigaOS4, MorphOS and AROS)
Monitor changes in a directory from within the Windows command line
Searches NTFS volumes almost instantly
Utility to change directory when in gnome-terminal via a dialog
cp and mv extended with checksum verification
Copies files conditionally using MD5 checksums