What is .IWZ file extension?
Project file created by InstallShield Express 2.x, a program that allows users to create InstallScript-based installation packages; stores project information, including settings, InstallScript code, file names, dialog images and text.
IWZ files store the necessary information to assemble an installation package. They are used in older Express versions of InstallShield.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.