Some utilities & tools for hacking & programming
Happy-Master Quad +
version 4.2 by B.Kloss

This is a really cool disk-editor which can handle double density !
Turbo Dos v2.1
by M. Reitershan Computertechnik

a very good Dos that can handle SD/MD/DD/QD
This is the complete system-disk with all utilities !
Chipmunk 3.04
(c) 1987 by Microdaft

This program can de-protect many, many games !
Translator
(c) 1985 by Atari

Turns your XL / XE system into an Atari 400/800
Turbo-Basic & Turbo-Basic Compiler
(c) 1985 by Frank Ostrowski / Happy Computer

- complete package, incl. compiler & runtime -
Bibo-Assembler v1.0
(c) 1986 by E.Reuss / Compy-Shop

- nice Assembler, by Compy Shop -
Benjysoft Soundmonitor v1.x
(c) 1991 by Benjysoft

Nice Soundmonitor that was used a lot in the Hobbytronic demos.
CMC module player
by Mozart / WSL

This is a MOD player for L.K. Avalon's Chaos Music Composer sounds.
The Disassembler v1.1
(c) 1991 by Wosfilm

- cracked by Mr.Bacardi -
XL-Art
(c) 1988 by Compy-Shop

Nice paint program (for its days...)
Cruncher 5.0
(c) 1991 by Magnus

nice packer / linker !
Ghost Editor v1.2
(c) 2001 by Casper / Pentagram

cool editor program !
here's an english instruction