.grp file extension
- Microsoft Program Manager Group.
Can you add to this? Do you know of any applications not already listed which will work with .grp files, view .grp files or open .grp files? Are you able to contribute any additional reference information or file format information about .grp files or have you spotted any errors or omissions? If so please let us know by emailing us at firstname.lastname@example.org - Thank you.