Gixen

Free online service that places bids (similar to eBay) in the closing seconds. Gixen can be used in the languages: English, German, French, Spanish. You must inform before, if the auctioneer allows such software for the bidding process.

Disadvantages in own words of gixen.com: "You may feel uneasy about sharing your eBay username and password with a third party. There is no way around it, as online sniping services need your login info in order to submit a bid for you."

Gixen.com says: "It is safe to just give away your eBay credentials: Gixen.com is using SSL both to transmit your password from your browser, and to authenticate it with eBay. Furthermore, your eBay password is not kept for long after auction ends - after your bids are submitted to eBay, your password is deleted within 48 hours to minimize the risk of it being compromised in the future."

Information from http://de.wikipedia.org/wiki/Sniper_%28Software%29 : With “Gixen” the own user data must be passed on to an (unknown) supplier, which is often forbidden in the general trading conditions of the auctioneers and represents naturally also a safety risk.