InstallShield Z

InstallShield Z format is a compressed archive format used by version 3 of the InstallShield installation software. Documentation is lacking but it has been partially decoded and implemented by open source projects.

It uses PKWARE DCL Implode compression.

Identification
Files begin with bytes.

Software

 * Universal Extractor
 * InstallShield File Compressor: Official compressor/decompressor utility (Windows command-line). Several different versions of it can be found on the internet (as icomp.zip, icompx.zip, icomp95.zip, ...). Included with Universal Extractor.
 * Open source InstallShield v3 extractor (C++)
 * Open source InstallShield v3 extractor (Pascal & Assembly)
 * Free implementation of PKware "explode" algorithm (C)
 * isextract

Sample files

 * → *.Z, *.LIB
 * → *.Z, *.LIB
 * → *.z, _SETUP.LIB
 * https://telparia.com/fileFormatSamples/archive/installShieldZ/