The Formulas Rendering Plug-In for the GIMP 2 is a simple plugin that allows you to change the values of each color channel of each pixel of a layer by using mathematical expressions. It is able to handle RGB* and Gray* images. Available operators are: +, -, *, /, ^, and %.
The Photo:Davo plugin alters a photograph to give it the "Davo" effect - inspired by the Lomo, yet completely different. There are several adjustments that can be used to fine-tune the effect. A single Undo command will reverse the operation.
It generates an animation from a text layer. The effect looks like a laser, burning the text into the background.
The animation can be saved as animated GIF afterwards. It is intended to be used on websites.