.GBX File Extension
File Type
Gerber PCB File
File Format
File
Common?
No
File Description
Printed circuit board layout used by CAM (Computer Aided Manufacturing) applications
Program(s) that open gbx files
Windows:
PentaLogix ViewMate or ViewMaster; GraphiCode GC-Prevue
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/gbx