What is .IST file extension?
Project template created by InstallShield, a program used to create Windows Installer (.MSI) and InstallScript-based installation packages; contains a reusable template, including default settings, code, and design elements; may include directory structures, custom scripts, default images, and text.
IST files provide pre-formatted templates on which to base installation projects. Development teams may create and distribute one or more templates to standardize installations among multiple projects.
NOTE: IST files are created using InstallShield's Premiere and Professional editions.
You can see a list of software programs here on www.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.