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.
Gixen - Free online service that places bids (similar to eBay) in the closing seconds.
uBuyFirst - Advanced eBay buying software finds newly listed "Buy-It-Now" items first!
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.
GarageBuy - GarageBuy provides an easy way to search on eBay.