ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
Ralpha Image Resizer - High-speed image batch conversion tool
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
prettyPhoto - prettyPhoto is a jQuery Lightbox clone.