Fortran-64 by Abacus for the Commodore 64 - Here's a link to the manual.

Abacus COBOL is designed to help users learn to program on the 64 or 128 in COBOL. It features syntax-checking editor, compiler, an interpreter, crunch function to reduce memory size, sample programs, and symbolic debugging tools such as breakpoint, trace, and single step. The program supports a subset of ANSI COBOL 74. Here's a link to the manual.

BackBit C64 Firmware Version 2.3.6

- Added application extensions

UltraBASIC-64 by Roy Wainwright is an extension for Commodore BASIC that adds 50 powerful commands to the Commodore 64.  Originally released by Adamsoft, it was later distributed by Abacus.  Included in the archive is a demo and two tutorials that explain many of the commands.  Unfortuntely I haven't been able to locate a manual.

The Spinner Disk Collection is a bunch of floppies full of type in programs that came with the Diehard magazine.  This is likely an incomplete collection.

Fassem 'The Fast One' Assembler / Disassembler by Merlin (M.Ellis) is a unique take on assembly language programming for the Commodore 64.

Thanks go to BlueCursor for the software and manual.

Fassem by Merlin (1984) is an extremely interesting and hard to find assembler / disassembler for the Commodore 64.  I spent hours just trying to find mention of this package and all I came across is two references.  One was from the magazine Commodore User Issue 16 (small sales ad) and a for sale listing at retrogames.co.uk.  This package is pretty unique because it lets you program in a type of BASIC syntax.  Check out the manual for all the details.

Big thanks go to BlueCursor for sourcing this truely rare program and manual.

Published in 1982 by Commodore, the C64 Macro Assembler Development System is a very powerful macro Assembler, editor, loaders and two machine language monitors along with other support routines.

Thanks go to BlueCursor for providing the software and manual.

Also of interest to some might be this link to the complete package on GitHub along with an additional dis-assembler, manual addendum and source.

The Commodore 64 MACRO ASSEMBLER DEVELOPMENT SYSTEM software package allows you to program in the native 6500 series Assembly language code, directly on the Commodore 64 computer.  It provides you with a very powerful macro Assembler, editor, loaders and two machine language monitors along with other support routines. These development tools operate like and provide the same level of direct machine interface as the Assemblers on much larger computers.

Thank you BlueCursor for the manual and software

This is one of my all time favorite desktop backgrounds.

This is the Documentation for "The Fast Assembler" V3 by Yves Han, taken from Compute!'s Gazzete Issue 31 and also available in Best of Compute!'s Gazette, January 1988.  Here is a link to the software which also has this documentation included.

Thanks go to BlueCursor for sharing the software and documentation.

First debuted in Compute!'s Gazette Issue 31, Here's a truly amazing machine language assembler for the 64 and 128 (in 64 mode). "Fast Assembler" supports multiple statement lines, labels, and macro-like "include" files. It can assemble to memory or to disk. Written very compactly, it occupies only about 2600 bytes, leaving the rest of memory for your source code. It also adds to the BASIC editor several new features useful to both BASIC and machine language programmers.

Thanks go to BlueCursor for this contribution.

Laser Genius is a complete machine code development system for the Commodore 64.  You can find the manual here.

Laser Genius is a complete machine code development system for the Commodore 64.

Compute!'s Gazette - Issue 07 - January 1984

W-1541 is a replacement for commodoreserver.com V-1541 v1.4 that includes DOS wedge commands.  If you don't know about commodoreserver.com, I highly recommend checking it out.  It's a great service that among other things provides a virtual 1541 drive to your Commodore computer.

Compute!'s Gazette - Issue 01 - October 1983

This one is a bit of a mystery.  I've found two references to Business BASIC on the net.  One is from the C64-Wiki that states this extension was by Kingsoft in 1985 and is also known as S'MORE Basic.  The other reference also by the C64-Wiki says "There is a module extension known as Business Basic for the C64 or the C64 Basic V3.5 implementation published in 64'er Magazin 6/90 to get BASIC 3.5 capabilities on a C64 hardware.".  I'm guessing this is the later, but since I can't read German you'll have to investigate this for yourself.

Compute!'s Gazette - Issue 03 - September 1983

CCGMS 2020 by Alwyz - Notes from the author:

- Re-write of pretty much every driver and tons of optimizations and improvements under the hood. Saved 10 blocks. 

- Ultimate driver has been removed, since Swiftlink emulation is now a feature of the Ultimate64 / Ultimate II+

- CRT is Easyflash Version. No RR-Net Support. IDE64 version in progress to hopefully be released at some point in the near future.

ModemBASIC is a utility which allows programing bulletin board systems and terminal programs with the ease of BASIC and the speed of machine language.  ModemBASIC adds 23 commands and functions to BASIC as well as a DOS wedge with an additional 7 commands, enhanced floating point routines, and a new cursor.

Full docs are included in the archive.

"MetaBASIC 128," (Released in Compute!'s Gazette February 1987) will change the way you program. It adds 11 new debugging and testing commands to BASIC 7.0-and these commands are instantly at your fingertips for programming sessions.

Here's a link to the documentation.

"MetaBASIC Plus" (Released in Compute!'s Gazette February 1987) is a companion program to "MetaBASIC 64." It adds 11 new commands and modifies HELP to print the new MetaBASIC Plus commands in addition to the original MetaBASIC commands.  Please read the docs because you have to merge this into MetaBASIC 64 which is included in this archive.

Combiner v1.0 by Nick Vrtis is a GEOS utility that lets you combine geoWrite files with precise placement.  You can combine files from various versions of geoWrite and even move graphics images.  Full instructions are built into the help menu.

Wrong is Write v7.0 by Joe Buckley (AKA Red Storm) is a utility for converting files from other word processors to GEOS format of various types and allows you to switch documents from one GeoWrite format to another.  Another feature of Wrong is Write is changing fonts / styles in a document.  Last but no least, you can also convert a document to and from true ASCII or PET ASCII.  According to geoWorld Issue 21 (Page 15) this would allow you to convert a Postscript file to a GeoWrite file and back again.

See issue geoWorld Issue 15 for a small overview of what Wrong is Write can do in the article "GEOS IN THE LAW OFFICE" By Marshall Kragen.

This is the manual for MetaBASIC 64, MetaBASIC 128 and MetaBASIC Plus.  You can also find this information in the February 1987 issue of Compute!'s Gazette magazine.

MetaBASIC (from the April 1985 Compute Gazette) is a utility will change the way you program. It adds 32 new debugging and testing commands to Commodore 64 BASIC, working by itself or in conjunction with a machine language monitor/assembler.

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.

C64 Menu Program by Edward Carroll is a simple but useful automated disk menu creator with a built-in turbo loader.

Dir-Designer Pro v2.1 from Tritech and programmed by J.Schuetz is a neat tool for not only sorting directories, but also adding seperators and even editing low level parameters of files.  

New Directory is a straight forward tool for changing the order of the files on a disk.  You can either manually sort the files or sort alphabetically.

Turbo Menu Maker C64 by The Yak Society is a cool disk menu creator.  You run the program, put in a disk and it will go through the files one by one asking you which ones to add to the menu.  When it's finished it writes out a custom menu program that has a built-in turbo load.  Very nice program.

This Commodore 64 Kernal is a variation that supports disk functions mapped to the function keys, leaving all the tape and rs-232 functions in place.