xcAuction
xcAuction is a powerful, full-featured, professional auction package that allows you to add free or fee based auction capabilities to any web site. It provides many features, such as: Standard, Reverse, Multiple Item(Dutch), Blind, Barter, Linked, RFQ (Request for Quote), Turbo, and Fixed Price auctions; Flash Buy; Proxy Bidding; Auto-Extend Anti-Sniping; Unlimited Categories; Multiple Image Uploads; Single Site Login and full integration with other XCENT eCommerce software; and much more.