Written by Will Corley in 1987, Puma 1541 is a two drive disk copier.

Quick Copy is a full disk copier that will work with drives other then 8, but it looks like it's still a single drive copier.  I don't believe this program is related to Quickcopy v2.0.

Written in 1984 by H. Gerloff and cracked by Antiram and GCS. Quickcopy is a single drive (Device 8) copier with both quick and nibbler modes.

Quickcopy v2.1 is a complete rewrite of v2.0 for Professional 1571 DOS.  So this copier works with the 1571 drive in 64-mode.

RAMBoard Utilities is a disk copier that works in conjunction with the RAMBoard hardware add-on for the 1541/1571 floppy drive. 

1982 - Written by Michael Schaff for Commodore Business Machines, released on July 27th, 1982. Single Disk Backup is a single disk copier for use with the C64 and 1541 Disk Drive.

Written by Michael Schaff and v1.1 modified by James Augie. Single Disk Backup is a fine program for copying unprotected disks, but the interface is annoying because you have to know what the command keys are and there is no built-in help. The "B" key is for BAM copy and "D" is for Direct copy. Not sure of the other commands.

Single-Disk Backup by Joe Schey is not only a full disk copier for the Commodore 64, it can also copy single or multiple files using a single drive, not having to copy all the tracks & sectors just to move a few files.

Sir Nibbler II by Wizard - Here we have a full disk copier / nibbler with the interesting ability to not only select tracks above the normal 35 (up to 40) but also to select the starting track. 

Slow But Certain Copier by Shift-Soft, released in 1988.  This is a feature packed copier that can do up to track 40 including half-tacks.  It can also do a specific range or tracks and you can set retries if your disk is questionable.

Fixed by Lord Crucifier. This is a dual drive copier with a name that probably perfectly describes itself. If you were going to spend the time "fixing" a copier named Suck Copy, wouldn't you at least change the name to "Sucks a little less copier"?

Super Kit v1.0 (1989) is a set of disk copying utilities for the Commodore 64.  In addition to the standard single and dual drive copier, there is also single / dual drive nibbler, disk editor and disk scanner.  Initially I thought this program came from Commodisk Issue 35, but on further examination it turns out that the version from Commodisk is actually newer and contains some additional utilities even though they look very similar and have the exact same name, so you may want to go check that out.

Superclone is a full disk copier.  Although the menu shows The Clone Machine and Unguard, this disk image didn't contain those optional utilities.

SuperCopy 64 is a dual drive copier with a few extra utility functions such as drive speed checking and drive unit number changing. Don't have any details on who wrote or released this copier.

Fixed by Edge/NDR. Swappers copy is one of the FEW copiers that will take advantage of a RAM expander to copy a full disk in one pass.

(c)1985 Compumed - The Mirror v3.2 Disk Archival System is not one of the copiers I can remember using back in the day. It supports tracks 1 - 40 and auto half tracking, so it must have been decent.

Written by Mike J. Henry and broken in 1984 by Dr. Chip. This is your typical disk copier with out any frills. It must be good though, because it's by Mike J. Henry.

If all you need to do is copy an unprotected disk and you want to do it quick, then Turbo Copy is for you.

(c)U. Stahl / Softbuster Systems - Apparently this is one of the more common copiers to be ripped off as you can see by the other versions available.

Cracked by Watson on July 3rd, 1985. Not only does this nibbler copy full disks, it can copy individual tracks also.

"Smashed" in 1985 by Turgy Magic. This version of Turbo Nibbler is pretty straight forward with only options for a full disk copy or a single track copy.

(c)1985 Eurosystems. Turbo Nibbler is a full featured multi drive copier with support for half tracks, re-tries and adjustable start and stop tracks.

Cracked on February 19th, 1986 by Computer Cracking Service. Pretty much the same as version 3.0 with the removal of the Identity Bytes option.

Released by Tuerk Cracking Service. Turbocopy is both a full disk copier and a file copier. An interesting thing about the file copier (which is for single drives) is that it lets you choose to copy continuously or one file at a time so you can choose to copy files to different disks if you want.

Ultrabyte Disk Nibbler - Found this very old version from 1984 by HCS, Inc.  Although I tested it and it seems to work fine on the .d64 I created for it, I'm also including the .g64 image of disk utilities I found this on.

Ultrabyte Disk Nibbler v6.0 was released in 1988 by Ultrabye, Inc.  This was a really good copier.  Included in the archive is also a disk of parameters.

Warlock Nibbler v1.0 by Warlock of Mosh Maasters - Todays utility is a simple nibble copier that supports 1 or 2 drives and replication of errors.

Note - This program appears to work only on PAL machines (At least it only works on a PAL machine when using WinVICE v3.9)

X-Copy is a two drive file / disk copier for the Commodore 64 and one or two 1541 disk drives.  Not only can you copy full disks, you can copy just the allocated data on a disk.  It also supports file copying and drive speed testing.  Nice little program.

Zap Copy v1.5