Highpass sharpening script (this is my first script for Gimp).
This technique is described by Rolf Steinort in episode 164 of the Meet the Gimp! video podcast.
You can run it from: Filters -> SkYNeT -> Enhance -> High Pass Sharpening
Because script makes a new layer from visible, make sure you have visible only layer you wish to sharpen. Other layers must be non visible.
This is a plugin for GIMP that allows reading and writing of JPEG XR image files. It has been tested on Windows and Ubuntu with GIMP 2.8.4.
Almost all pixel formats supported by JPEG XR can be loaded. However, non-compatible formats will first be converted to a representation that GIMP understands (this means you'll loose HDR data for example). All RGB pixel formats get converted to 24bpp RGB, all RGBA formats to 32bpp BGRA, and all grayscale formats to 8bpp Gray. Black-white images are imported as indexed images.
This simple program pulls definitions gradients created in a file. Svg Inkscape and converts them into files gimp gradients GGR. You can just drag the icon svg file an application, which will export the gradients to the files in the program folder, or run the application by clicking on it twice, and acting in accordance with the instructions.
Simple console program made by me to automatic generate random gradient in ggr format. Someday I wonted to do this tutorial here: http://www.eyesontutorials.com/articles/5276/1/Photorealistic-Vinyl-Desi... and I could not do it because GIMP does not have a generator of random gradients. Because I know how to programing I decided to write a console program that generates a random gradient for me.