Gattrib is gEDA's attribute editor. It reads a set of gschem .sch
files (schematic files), and creates a spreadsheet showing all
components in rows, with the associated component attributes listed in
the columns. It allows the user to add, modify, or delete component
attributes outside of gschem, and then save the .sch files back
out. When it is completed, it will allow the user to edit attributes
attached to components, nets, and pins. (Currently, only component
attribute editing is implemented; pin and net attributes are displayed
only.)