Short: DiskMon, FileMon, DiskOptimizer and more ...
Type: disk/moni

DiskMon Version 2.8:
 -DiskMonitor: Works with Floppys, HardDisks and RAM-Disks (RAD, SD0, ...)
 -FileMonitor: hexadecimal/ascii File-Editor
 -DiskOptimizer: Fast and reliable Disk-Optimizer, all FileSystems
                 (DOS\0 - DOS\5), optimized for DirectoryCache-FileSystems
 -MFM-Editor: Low-Level-Editor for Floppy-Disks
 -Repair-function for read/write-errors (Floppy-Disks)
 -Works with Kickstart 1.2, 1.3, OS 2.x, 3.x.

For more Information read the Documentation.