gimp-plugin-export-layers is a GIMP plug-in that exports layers as
separate images. Features include:
* Export in any file format provided by GIMP and any installed
third-party plug-ins
* Treat layer groups as folders
* Preview layers to be exported
* Customize export with additional operations and constraints
See the plugin from "File --> Export Layers..." with another option
of "File --> Export Layers (repeat)" to subsequently export the same
image (perhaps reworked) with identical export settings.