Gixen - Free online service that places bids (similar to eBay) in the closing seconds.
BayGenie - eBay auction sniping service.
EZ sniper - Online auction sniping software. The most effective unattended esnipe auction sniping. Snipe ebay and others.
Auction Bidding Sniper for eBay - Play your cards close to your vest, and your eBay bids even closer by doing your own eBay Auction sniping.
Bid-O-Matic - Bid-O-Matic or Biet-O-Matic (BOM) is an Open-Source desktop tool that allows for observing auctions...
Myibidder - Myibidder (Myibay) is a Free Auction Bid Sniper service for eBay.