How to open GRR files
Did your computer fail to open a GRR file? We explain what GRR files are and recommend software that we know can open or convert your GRR files.
What is a GRR file?
The GRR file extension indicates to your device which app can open the file. However, different programs may use the GRR file type for different types of data.
While we do not yet describe the GRR file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.
We are continually working on adding more file type descriptions to the site, so if you have information about GRR files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!
Update info Upload example file
Various GRR openers
These apps are known to open certain types of GRR files. Since many different programs may use GRR files for different purposes, you may need to try a few of the apps to open your specific GRR file.
 | Gradekeeper | User submitted |
 | GEO5 pro Redi | User submitted |
 | JDViewer | User submitted |
Try a universal file viewer
Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.