ISF File Type

- The quick facts

What are ISF files and how to open them

Are you having problems opening an ISF file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an ISF file?

The .isf file extension is most commonly associated with the Inspiration educational diagramming application. The ISF files contain flowcharts created with the software. These flowcharts are used by students to plan, research and finalize projects. The ISF files can be viewed as diagrams or text-based outline formats.

The .isf file extension is also used for InfoNet snapshot files, ModelPress highly compressed CAD model files, Tektronix instrument data files and ZerOS saved show files.

How to open ISF files

Important: Different programs may use files with the ISF file extension for different purposes, so unless you are sure which format your ISF file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different ISF openers which you will find listed below.

Last updated: June 30, 2021

Suggest another file format using extension ISF

While we know of one file format using the .ISF file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .ISF file.

Various apps that use files with this extension

These apps are known to open certain types of ISF files. Remember, different programs may use ISF files for different purposes, so you may need to try out a few of them to be able to open your specific file.