The University of Nevada, Las Vegas Libraries have released dmMonocle 1.0.
Here's an excerpt from the project page:
dmMonocle is a stand-alone image viewer for CONTENTdm® collections, intended as a replacement for the default image viewer provided with CONTENTdm® 4.x and 5.x. The goal of the project is to make CONTENTdm® images, such as photos, maps, and scanned documents, easier to view and navigate. dmMonocle is written in JavaScript using jQuery, and provides patrons with the ability to zoom, pan, and rotate images on the fly without reloading the entire page. dmMonocle slices up large images into smaller square tiles, loading only the tiles in the visible area, much like Google Maps. In addition to the improved main viewing area, dmMonocle provides a thumbnail-sized navigator, showing patrons which part of the larger image they are viewing. The navigator may also be used to quickly move around an image