How to open .GUI file extension?

If you cannot open a new file that has been saved in the .GUI format you need to download the appropriate software. The manufacturer of .GUI files is Indigo Byte Systems; .GUI files belong to the Data Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .GUI files. Activities performed in the order described should solve the problems with all the files in the .GUI format.

• What is .GUI file?
• How to open .GUI file?
• What is .GUI file?