Does GIMP have actions?
GIMP has no actions. In order to create actions in GIMP developers ask all the designers who are trying to process the photos in batch, to learn the Script-Fu or Pyton-Fu scripting languages.
There are no actual actions in the program. Something similar you can find here: http://sourceforge.net/projects/gimp-sharp/
If it does not fit, you can try to search plugin on registry.gimp.org