Cracked in 1985 by Antiram, Jedi & CGS - Bloedes Disk Tool is an array of functions to work with disk data such as searching for bytes, transfering blocks, finding allocated blocks, etc...

Written by Michael Harvey, Commander 64 is a straight forward disk utility with multiple functions such as format disk, copy files, check for errors, scratch files, validate disk, etc... instructions are built into the program.

Released by CSD - Dir. Repair 3 is a multi-function tool that can do things such as: write / un-write protect a disk, repair a directory, follow dir chains, allocate track 18, fix pointers, free unused blocks, etc...

Disk Commander by Melody Hall Pub, Released in 1986 is  a multi-function disk tool for the Commodore 64.  There are over a dozen commands for all sorts of file related functions.  Check out the screenshot to see what's available.

Disk Ease is your standard multi function disk tool with features such as directory sorting, disk error check, program merging, file copy and more.

Disk Magic 1541 was created by Christopher T. Scovel and released in 1988.  This program is full of great utilities for dealing with floppies on the 1541 disk drive.

Released April 1989 by Christopher T. Scovel. This nice utility has a utility for just about every disk related chore you might have. Docs are on the disk, but the screenshot pretty much sums it up.

Written by David Stewart (Cooldaddy) - Diskmate is a multi-function disk tool that can format a disk, validate a disk, view an seq file, erase files, hide a directory and zero out files. Docs built into program.

Disk Util by D.C. Williamson - Nothing fancy here, but gets the job done when you have a few disk cleaning chores.

Disk Utility Wedge by Jim Klitzing is a multi-fuction utility for the Commodore 64.  There are full docs on the disk.  Here's an excerpt from the docs:

I wrote this program with several objectives in mind.... I wanted to be able to access a lot of utility programs without having to load them in every  time I wanted to use one. Also, I did not want it to slow down the running of  programs, change any of the standard basic commands, nor use up any of the  basic memory space. I also wanted to be able to use abbreviated DOS commands.

 The wedge resides in memory from hex $a001 to $cfff. Any program that does not use memory in this range should be able to co-exist. When Micromon is in  use, the casette buffer is also used. About 2/3 of the memory used by the
 wedge is under the basic rom. Since the wedge is all machine language, basic  is not needed to perform any of the wedge commands, and is switched out  (temporarily) while they are being performed. All wedge commands must be
 preceeded by an asterisk (*). The asterisk tells basic (direct mode only) that  the command that follows should be turned over to the wedge interpreter.

A newer version of this program can be found HERE.

By Bob Marquis. This utility does multiple things such as format disk, initialize drive, validate disk, rename file, etc... but the one thing that stood out was the ability to join two seq files.

This is a moded version of Disk Workshop by CSD. Multi drive support has been added as well as some relative file functions.

Disky Business by Jeff Holbrook is a pretty simple set of utility functions for dealing with basic floppy disk tasks on a Commodore 64 with a 1541 floppy drive.  A couple features I like about this program are that it works with drives other than just device #8 and that it has the ability to move a file on the disk into the first position for using load "*",8,1.  The program has many other abilities which you can see in the screenshots.

DOS in BASIC is a simple BASIC program that displays a directory and then lets you load, run, scratch, rename or copy a file from the displayed directory.

Format-Editor is a multi-purpose disk tool that can: check a disk for errors, check a single track for errors, write protect a disk, un-write protect a disk, rewrite the BAM, create error, repair a track, format a disk and issue disk commands.

Functions Keys 64 - Your standard multi-function disk tool for renaming, deleting, validating, formating, locking/unlocking files and printing directories or sequential files.  Support multiple drives (1541 / 1571 only)

Help DOS v1.0 by Titan is just a small little program that can format a disk, scratch a file, rename a file and validate a disk.  The best feature of this program is the cool font it uses.

Kltizing's Utility Wedge by Jim Klitzing - This is a really nice multi-function utility with some great features for BASIC programmers, incuding auto-numbering, re-numbering, multi-line delete and un-new.  A few of the features I like include the mini-word processor, the ability to print hi-res, lo-res (PETSCII), and SEQ files.  There is also a machine language monitor (Micromon) and even a terminal program.  This program really has a little of something for everyone.

This cool little utility is mis-named in my opinion.  Not only is it a file copier, it is also a disk editor and drive speed checker.  I don't believe it actually has any quickload feature at all.  

Magic Dos by Dietmar Schreiner was released in 1987.  Although this multi-function tool only handles the usual DOS chores, it has a nice clean interface.

Written by Dr. Midnight. This handy utility kit has just about everything you could need for disk / file / programming jobs. Take a look at the screen shot to get an idea of all the features. There are also Docs on the disk.

Pirate's Toolbox v3.5b is a nice collection of tools for doing just about anything to a disk. 

NOTE:  Not all of the modules seem to work, but most do.  I have looked at many copies of Pirate's Toolbox, and this is the only one that was mostly working.

A complete utilities package for the 1581 disk drive and Commodore 64. - Copy whole disks from 1541 or 1571 format to 1581 partitions. - Copy 1541 or 1571 files to 1581 disks. - Copy 1581 files to 1571 disks. - Backup 1581 disks or files with 1 or 2 1581s. - 1581 Disk Editor, Drive Monitor & RAM Writer. - Perform many CP/M and MS-DOS utility functions. - Complete DOS manager.

By T. Shore. Features: View Dir, View load address, Unscratch File, Exam. disc for Errors, Check Disc Blocks, Test all Sectors. Change Disc Name, Change Disc ID, Change Disc Device, Scratch Files, Write Errors to Disc, Hexadecimal Conversions, Send DOS Command.

Super Utility 4.1 written in 1986 by J.F. Grace.  This handy utility has some really super functions such as creating autobooting files, displaying the block allocation map of a disk, hiding a disk directory, printing disk contents, and many many more.

Release in 1985 John H. Kohler - This handy disk utility has many features, such as: Copy tracks/sectors, copy files, scan disk for errors, revive files, block allocation map, find start/end address etc.... a must have for your disk arsenal!

Released in 1986 from Strange Mind Software by Don Mayhew. Features - View BAM, Lock/Unlock Disk, Dir Editor, Disk Editor, Get Load Address, Print BAM/Dir, Change Disk Name.

By Fastfred - GXC is a multi-function tool that does everything from grab a disk directory to copying files. It is written entirely in BASIC so might be some good example code in there.

Written by Eugene Morgan - This handy drive utility has many functions as you can tell by the screen shot, but my two favorite are program start address and bit image directory.