A Blender extension that adds two new commands to the mesh editor:

• Mesh > Show Attributes

  Displays values for the currently selected vertex, edge or face mesh attribute as text in the 3D view (limited to 100 values to avoid crashing with large meshes).

• Mesh > Batch Set Attributes

  An enhanced version of Mesh > Set Attribute which allows setting multiple mesh attributes for the selection at once, instead of only the current attribute.

And two new commands to object mode:

• Object > Rename Attribute

  Rename an attribute on the selected meshes, preserving data.

• Object > Edit Mesh Attribute Schema

  Copy attribute definitions from/to all selected meshes, or bulk-delete attributes.

I've found this quite useful when using meshes with many custom attributes as inputs for geometry nodes.