ASCII Conversion 64 by Bob Kober - Can never have too many ways to convert a file from <> to ASCII or PETSCII.  This one will also strip carriage returns if you want it to.

Very simple little BASIC program to convert and ASCII text file to PETSCII.  

D64 Image Creator v0.9beta was released in 1995/96 by The Fake and is a Commodore 64 program that can read a 1541 floppy and convert it to a .D64 image used with many Commodore emulators.  In the archive are docs and a spreadsheet detailing which drives the program is compatible with.

D64it is a simple program for the c64 to convert from .D64 files (emulator disk images) to a 1541 disk or vice-versa. It's slow but it works! Of course to use it you need a device on the c64 that can hold a ~170k D64 file (eg 1581, Ramdisk/REU, CMD hard drive etc).

Features:

• Works with all storage devices, including REU's with ramdos
• Supports paths/partitions on CMD devices
• Supports CMD 1541 partitions as well as 'real' 1541 drives
• c128 versions works with fast serial devices like 1581/1571

This is the source used to compile both versions of d64it1b, in it's original turbo/macro assembler format and also exported to petscii.

Easy Script to SpeedScript Conversion by Kevin Hisel is a straigh forward data conversion utility for the once popular Commodore 65 word processors.

GNYLF v1.3 (Still shows 1.2 in the docs and program) is quite a nice text conversion program that supports a suprising number of formats.  See the docs included for details.

IBM.D64 -> 1541 copies .D64 files from double density pc disks (no HD's) on a 1570/71/81 to a headered 1541 CBM-disk.  It will work with a C64 and 1571 but two drives is better so you don't have to swap the disk 6 times.  Also works with 1581 drives.

Written by Will Corley, Kommatari is a data conversion utility that lets you convert ASCII, PETSCII, Atari and even a custom defined data.

Monk 1541 was written by non other than the famous Lynx archiver author Will Corley.  Will calls Monk the "Universal Text Translation Utility".  Basically it can convert ASCII to PETSCII, SEQs to PRGs, etc.... also does vice versa of conversions mentioned.  Really nice looking program.

Source Code Converter by Anthony Harris is a program to convert sequential files to program files and vice versa.  There is full documentation included in the archive, but here is a brief summary by the author:

I wrote this program to convert ML source code from one file type to the other. And that is its main purpose of the program. Although you might think of other uses for it. What started out as a simple program turned into quit a
challenge, at least for me, anyway here it is. I have checked and debugged it so you shouldn't have any problems. Now a little discripion is in order so you know what it does.

Text Util is one of those super simple utilities you almost never need, but occasionally when you want to convert a text file from PETSCII to ASCII or the other way around, it's indespensible.  Additionally, this small BASIC program will also convert LF to CR or CR to LF (Line Feed / Carriage Return) and can process any size file.

The Translator v1.2 by Kim Miller - You can never have too many utilities of the same type, because sometimes one will choke on a file and another won't.  That being said, we have another utility to convert from PETSCII to ASCII or the other way around.  This one is in machine language, so will likely be much faster than most of the other ones I've found in BASIC.

Tiny Yellow Brother (TYB) is a program for the C64 to read and write MS-DOS disks on 1581/FD drives. It was derived from LRR by Doreen Horne of Australia.

Written by Will Corley, Transformer 1541 lets you convert a Relative file into a sequential file and vice versa.  Great for editing data in a relative file.

UUxfer v1.1 was written by Fuzzy Fox and is used for UUencoding and UUdecoding files which are typically found on Usenet.  Docs are included in the archive.

Vert! v.20 by Mike Dryja (1986) is a data conversion utility for the Commodore 64 that can move text between the following formats:  Ascii, Speedscript, Write Now!, and Q-Link.

Word Writer Converter is  a data conversion utility for converting PETASCII or ASCII text files to Word Writer format.  On top of that, you can also convert Word Writer files to PETASCII or even a GEOS TextScrap for importing into a geoWrite document.  I tested this out on a file I put in the archive so you can check out the results.