GIMP Plugin Registry

Generates a complex rim around an arbitrary shape from a line of pixels. Get it from SourceForge: http://gimp-wrapmap.sourceforge.net/

A Script-Fu that create a bumpmapped Text or Shape

homepage : http://www.lefinnois.net/bumpyEN.php

This is a plugin for GIMP version 2.0 and above. It allows you to convert images into RGB normal maps for use in per-pixel lighting applications. The goal is to completely clone NVIDIA's photoshop plugin, with a few new useful features. Downloads can be found on the project home page.
Home page: http://code.google.com/p/gimp-normalmap/