GRO File Type

- The quick facts

What are GRO files and how to open them

Are you having problems opening a GRO 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 a GRO file?

A .GRO file is an Allegro MIDI music file. Through our analysis of GRO files, we know that one use of the format is Allegro MIDI music. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open GRO files

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

While we have not verified the apps ourselves yet, our users have suggested 3 different GRO openers which you will find listed below.

Last updated: July 13, 2020

Other file formats using extension .GRO

While Allegro MIDI music is a popular type of GRO-file, we know of 2 different uses of the .GRO extension. Different software may use files with the same extension for different types of data.

Genbox Family History report options

Through our analysis of GRO files, we know that one use of the format is Genbox Family History report options. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

While we have not verified the apps ourselves yet, our users have suggested 3 different GRO openers which you will find listed below.

Various apps that use files with this extension

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

Genbox Family HistoryGenbox Family HistoryUser submitted
Dragon UnPACKerDragon UnPACKerUser submitted
ZipZag ArchiverZipZag ArchiverUser submitted
We have not verified any software that we know for certain will work with GRO-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with GRO-files. If you know one, please use the 'Suggest a program' link below and tell us about it!