Files that contain the .ist file extension are project template files that have been created by the InstallShield software. The InstallShield application is commonly used to create .msi Windows Installers and installation packages for software developers.
The .ist files that are created by the InstallShield software contain a template that stores default settings, design elements, directory structures, custom scripts, code, images and text. This allows the developer who is creating the installation package to create packages for multiple applications without having to start the development of each installation application from scratch each and every time, saving the developer time and allowing him to create more installation packages in a given time period.
Try a universal file viewer
File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the IST file format or software that uses files with the IST suffix, please do get in touch - we would love hearing from you.