ZOO was one of the many competing archive formats in the 1980s, and was based on the LZW compression system. It had some popularity with Open/VMS and Amiga systems, but didn't ultimately win out over ZIP.
Files have bytes
DC A7 C4 FD at offset 20.
There are three known compression algorithms: 0 is uncompressed; 1 is LZW, also called "LZD"; 2 is "LZH".
- unzoo.c (Does not support LZW/LZD.)
- BOOZ102.ZIP - Booz (Barebones Ooz) (Does not support LZH.)
- http://cd.textfiles.com/aminet0294/AMINET/UTIL/ARC/ → *.ZOO
- Wikipedia: Zoo (file format)
- The ZOO Archive File Format from Corion.net, via FileFormat.info
- Archive format info, including ZOO
- ZOO file header format (among other archive types)