X Northern Captain is a file manager for X Windows. XNC has the same ideology as Norton Commander but also many additional and specific functions including a Virtual File System with support for tar, zip, rar, rpm, deb, bzip2, and lha archives, FTP support, built-in xterminal, viewer for JPEG, GIF, BMP, TGA, XPM, and XBM formats, an editor, users menu, extensions association, bookmarks for frequently used directories, and more.
xdiskusage is a user-friendly program to show you what is using up all your disk space. It is based on the design of the "xdu" program written by Phillip C. Dykstra. Changes have been made so it runs "du" for you, and can display the free space left on the disk, and produce a PostScript version of the display.
Xplore is a powerful and highly configurable Motif file manager with an Explorer-like user interface. Besides the usual tree and file views, xplore also has a "shelf", which is a kind of clipboard inspired by the NeXT file manager, and a "log" pane for capturing output from launched programs. The builtin automounter allows you to access removable media in a transparent manner. Files can be moved and copied using simple mouse operations, and you can execute type-specific shell commands when a file is opened, used as the target of a drag and drop operation, or manipulated using popup menus. File types can be defined in terms of arbitrary filename and MIME type patterns. Full keyboard navigation is also supported, including an incremental filename search facility. Last but not least, xplore speaks all standard X11 session management protocols and thus integrates nicely with most popular desktop environments.
XTC is a UNIX-based clone of XTree Gold, a file manager which was popular in the days of DOS. It is currently in development and contains only file and directory manipulation features. Eventually, many if not all of the features of the original will be included, including File viewer, Text editor, Hex editor, Archive manipulation, Command-line window and On-line help.