How to open .GRR file extension?

If you cannot open a new file that has been saved in the .GRR format you need to download the appropriate software. The manufacturer of .GRR files is Gradekeeper; .GRR 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 .GRR files. Activities performed in the order described should solve the problems with all the files in the .GRR format.

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