Elfin Photo Editor - Elfin Photo Editor is a handy program that enables you to make your photos shine.
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
Magic Photo Editor - Magic Photo Editor for Windows is a feature-rich application that allows you to create original edits of photos.
ImageJ - and Other Health Care
FotoSketcher - Turn photos to paintings, drawings and sketches. FotoSketcher is a 100% free program to turn your photos into beautiful art, automatically.
ACD/ChemSketch - ACD/ChemSketch for personal and academic use brings the power of our structure drawing package to your home computer.