Auction Eagle -- Monitor your auctions with this free auction software. eBay buyers are notified instantly whenever you have been outbid or when an auction ends.

Auction Informant -- Let Auction Informant track all of the eBay auctions you're interested in and send you email whenever new items are posted or new bids are placed.

Auction Messenger Professional -- Monitors eBay whenever you want it to and it hides down in the Windows task tray. It also automatically logs into your eBay account, pulls all your activity and displays it in an intuitive and clean format for you to quickly review. Then just click on the auction item of interest and Auction Messenger Professional will take you directly to that page with its integrated internet browser that is based on Microsoft's Internet Explorer technology.

AuctionSherlock -- Uses cutting-edge technology to scan eBay for all the current and past auctions. It then uses a unique, proprietary "Auction Data Metrics" process to mold the heaps of data it receives from eBay into relevant statistics for you. Features include:
-Pinpoint red-hot products and what products are “duds”
-Spy on the eBay power sellers selling boatloads of product and “borrow” their techniques for marketing YOUR products!
-Discover what category to list your auctions in to find those customers who desperately want to buy from you
-Find out the “true market value” for a product so you can set the reserve auction price to match
-Detect which auction type works best for what you’re selling: with or without a reserve set, a regular auction or a Dutch auction.
-Track the eBay marketplace over time to notice trends that others will miss

Auction Station 2000 -- An entire software suite of applications for eBay, integrated into a single interface. Features Automatic Bidding, Auction Management, Power Searching, and More.

Auction Submit -- This software lets you create and track auctions on eBay, Amazon, or Shoporium.com.

Auction Tamer -- A unique multi-site auction software that combines Buying and Selling features in one product. Itr allows you to do your homework before snatching that great buy, and also takes the hassle out of selling. This software supports eBay, Amazon, Yahoo, uBid and many others. It also supports the foreign eBay sites, Amazon UK & Yahoo UK and foreign currencies.

BayCheck Pro -- Find out all there is to know about any eBay auction user with a single click:
Selling history
Bidding history
eBay feedback received
eBay feedback left for others
Negative and neutral feedback
BayCheck -- Free auction software version of above program.

BayMail -- Email eBay users with a click.

eAuction Watcher -- This auction software makes it easy to manage multiple online auctions. It lets you track numerous auctions from one unique location. Many online auction sites are supported including eBay, Amazon.com, & Yahoo.

Fee Finder -- Calculate eBay, PayPal, Billpoint & shipping fees.

Shooting Star -- This auction software features include: A composer for auctions on eBbay; The ability to track hundreds of current bids; The ability to send pre-designed e-mails to other bidders or buyers; And the ability to keep track of how much money you have bid.

Sold! -- Automatically retrieves all information for current and completed auctions, tracks costs, sends automated e-mails, prepares and posts feedback, tracks the status of any auction- whether you are the seller or a potential buyer. Sold! can even bid for you when you are not available.