Xfile

Xfile is a file manager developed by Rixstep, built as a Finder replacement for the Mac OS X operating system. Its features are mostly congruent with those accessible by generic Unix systems.
Some examples of the more advanced features are a consequence of the above. Operating only with generic Unix APIs Xfile is capable of dealing with a wide variety of file systems and not limited to the operating system's native HFS+.
The interface of Xfile is navigational in nature, although Xfile windows can be seen as "document" windows and behave as such.