A gbb file extension is related to the Wiley eGrade gradebook backup format.
There is one other file type using
the GBB file extension!
.gbb - GBBPlug input data
GBB file extension - Wiley eGrade gradebook backup
What is gbb file? How to open gbb files?
File type specification:
The gbb file extension is associated with the Wiley eGrade, an online assignment system developed by John Wiley & Sons, Inc.
The gbb file contains gradebook backup from Wiley eGrade.
This gbb file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.