Enhance your GIMP with GIMP plugins and scripts
In English slang, the word gimp used to denote football-challenged people in olden times, but now it is mostly used as the witty and surprisingly non-recursive acronym for an open-source image manipulation software called GIMP, all capitals. A great program, a poor man's alternative to payware stuff. But also a rich man's alternative. Why? Because you get plugins and scripts.
Like any self-respective open-source project, GIMP prides itself at being extensible. Firefox has it, GIMP has it. Plugins are the smartest way of making something good better. You do not need to make any changes to core software, you just add extra stuff. For people who use GIMP for their art work, having some of these extras is exactly what they need.