C2DD v1.0 - This program changes the current
  drive/directory to a specified pair and
  records path information for moving back to
  any of several previous drive/directories.
  It can move back one pair at a time or
  present a graphical pick list.  C2DD can be
  used with any DOS directory navigator and is
  useful for returning to the starting
  drive/directory in batch (.BAT) files.  Free
  program by FileJockey Software.

  FULL Hard Drive utility, ZIP/ARC/ARJ/LZH
  support, Multi-window editor, 2-key DIR
  pruning, Traverse&Exec, Hypertext help.
  Opti-Fil floppies, Copy/Del hidden files
  Disk Commander 1.20 -- A must try!

  DISKBACK (DISKBACK.ZIP), October 1995,
  Ver 1.0, <ASP>. DISKBACK allows fast & easy
  backup of hard disks while preserving the
  source drive file structure. Designed for
  fast backups to cartridge hard-drives but
  can be used with any writtable disk media.
  By MarshallSoft Computing, Inc. $40.

  DiskCare v4.0 Do you maintain your Disk &
  Hard Drives Correctly? DISKCARE v4.0 is a
  menu driven program which performs all the
  disk maintenance features of DOS (CheckDisk,
  ScanDisk,Defragmenter). Up to 8 drives (A-H).
  Uncripped SHAREWARE. Replaces dkcare10.zip
  thru dkcare32.zip

  EASY BACKUP VERSION 6.0 Compressed Backup
  Disk Maker - Easy Backup makes compressed
  self-restoring backups. Backup parameters
  are stored in a data file so subsequent
  backups can be menu selected. Options to
  backup one or more named directories with
  or without their sub directories.
  Keywords: BACKUP ARCHIVE COMPRESS
  Registration £15

  EIDETEST detect flawed EIDE controller for
  DOS emulation under DESQview, Windows, OS/2
  or NT. Checks for the RZ-1000 and CMD
  PCIO640B EIDE PCI controller flaw by writing
  and reading a hard disk while simultaneous
  I/O potentially interferes. C++ source
  included. Freeware from Roedy Green of
  Canadian Mind Products. Includes EIDEFLAW.TXT
  FAQ on the flaw, sometimes erroneously called
  "the DMA bug".