Scarlet Image Viewer consist of the function which certainly is necessary to the Specialist. It supports Tab functionality and Bookmark int the form of favorites of a web browser. You can see freely the Alpha of images only and dds, hdr, pfm file format required to develop games. and It has functionalities of Swf file view (and play) and view Zipped files. It basically supports 30 types of graphic files and available free to all users.
LINK:
http://www.shimtools.com/scarlet/english/english_index.htm
