Hamster Font Manager (HFM) helps you control the avaliability of fonts in all of the supported applications from a central place. It includes modules to support X11, Ghostscript, and TeX. A PostScript module handles PS Fonts while other fonts remain untouched by this program. It features a nice Tcl/TK GUI. For X11 configuration to work, this software has to run on the machine's own X Server.
Krusader is an advanced twin-panel (commander-style) file-manager for KDE 3.x, but with many extras. It provides all the file-management features you could possibly want. It also features extensive archive handling, mounted filesystem support, FTP, an advanced search module, a text viewer/editor, directory synchronization, support for file content comparisons, powerful batch renaming, and much more. It supports the following archive formats: tar, zip, bzip2, gzip, rar, ace, arj, and rpm. It can also handle other KIOSlaves such as smb:// or fish://.
mmounter tries to mimic the behaviour of MacOS with regards to automatic monitoring and mounting of the volumes in your system (CDs, ZIP disks, floppies, HDs) using their volume name as the mount point. It will optionally eject devices and let users mount/umount them. Currently mmounter supports ext2, ext3, iso9660 (CD), HFS, and VFAT. This tool is user-space only (doesn't require any kernel patching) and should be fairly portable.
Vshnu is a visual shell for Linux/Unix finally done right. Best used as an optional color visual mode to a regular command line shell, vshnu is handy for powerful directory listing and navigation, Unix command assembly, special actions on file types, and fileset handling. Written in Perl for portability and high configurability, it also provides the advantages of a Perl interpreter as part of your Unix shell environment.
GWCC allows users to execute network utilities (ping, nslookup, traceroute), workstation commands (netstat, df, lpr), and do cool things like process grep from a single tabbed window. Command flags are highly configurable, results windows are savable and printable, and there is a System Stats tab showing you process info, current users, Apache server status, Samba status, and more.
glogwatch is a GKrellM plugin that alllows the monitoring of an arbitrary file, such as /var/log/messages, or a SNORT alert file, for changes. Once a change is detected, a timer is displayed showing the elapsed time since the change occurred. The timer is reset and re-armed when the user clicks on the plugin to view the file.