ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Speedcube - A simple and elegant Rubik's cube solve timer
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Linia - You will never look at colors the same way...
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Colorcube - Turn pieces and blend colors in this minimal puzzler