ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Bulk Resize Photos - Resize large photos in bulk
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Dribbble Resizer - Resize your designs for sharing on Dribbble