On AROS One there is also RNOEffects, an application cross-platform developed by jPV that lets you add effects to your images:
Features
- Around 30 different image processing effects including drop shadows,
elliptic crop, and other effects which would need several steps on other
similar programs
- Drawing options for brushes, text, lines, ellipses, boxes, and arrows
- Batch converter and image joiner tools
- All effects can be applied to images in a freely selectable order in a
batch conversion or image joining process
- Unlimited amount of images can be joined as a single image
- Can save multiple images to a single PDF file
- ARexx support