Wp Auction
phpbb-Auction is a free auction-system which can be used as an add-on for the phpBB-community-software.
More Info 
Developer: phpbb-auction.com
License: GNU General Public License (GPL)
Operating System: Platform Independent
Auction Business Manager is a sweet tool that helps you keep track of income and expenses for your online auctions, like with eBay.
Developer: www.Small-Business-Ideas.net
License: Freeware
Operating System: Linux / Windows
BPower Unique Low Bid Auction script will allow you to setup comprehensive and robust auction site with 3 types of low bid auctions.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: All
eBay type auction site with 2 languages.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: All
Auction with poker Game, Great Script.
Developer: del
License: GNU General Public License (GPL)
Operating System: UNIX, Winx, vista
Lower bid auction is a new type of online auctions for selling expensive goods and properties.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: UNIX, Win NT, XP
Hidbid is a free eBay auction sniper service that places a bid for you, that you schedule, in the last few (set by you) seconds of an auction.
Developer: Hidbid.com
License: Freeware
Operating System: Linux
Hidbid.
Developer: Hidbid.com
License: Freeware
Operating System: web based
You could use this script to have your favorite online auction items auto-refresh at your specified interval or whenever you want.
Developer: javascriptsource.com
License: Freeware
Operating System: All
Library to search WoW auction houses using the www.
Developer: snippets.dzone.com
License: Freeware
Operating System: All
Auction Framework is a complete auction framework to be implemented within any website whose host supports PHP and a mainstream Database system (such as MySQL).
Developer: SourceForge.net
License: Artistic License, GNU General Public License (GPL)
Operating System: Windows, Linux, Mac OS, BSD, Solaris
This is a plug-in for WP.
Developer: wordpress.org
License: Artistic License, GNU General Public License (GPL)
Operating System: Windows, Linux, Mac OS, BSD, Solaris
It is useful for upgrades when the old wp-config.
Developer: wordpress.org
License: Artistic License, GNU General Public License (GPL)
Operating System: Windows, Linux, Mac OS, BSD, Solaris
EveryAuction is the premiere free auction package that allows just about anyone to set up an online auction site.
Developer: EverySoft
License: GNU General Public License (GPL)
Operating System: Platform Independent
BPowerItaliano Low Bid Auction.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: windows, unix
Build your penny auction site for a few minutes.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: UNIX, Win NT, XP
BPPennyAutoBid script is a powerful, scalable & fully-featured auction script that lets create the ultimate profitable online penny auction website, like swoopo, bidster, madbid.
Developer: BPowerhouse
License: GNU General Public License (GPL)
Operating System: UNIX, Win NT, XP
Penny auction software ICPennyBid is a powerful, scalable & fully-featured penny auction script that lets create the ultimate profitable online penny auction website, like swoopo, bidster, madbid.
Developer: IcloudCenter
License: PHP License
Operating System: Not Available
ICLowBidAuction script is a Low Bid Auction software for setting up a comprehensive and robust lowest unique bid auction site with 2 types of low bid auctions: Classic and Lower.
Developer: IcloudCenter
License: PHP License
Operating System: Linux, Windows Vista
ICDutchAuction scratch auction software is a powerful, scalable & fully-featured auction script that lets create the ultimate profitable online multi-language Dutch auction website with option for buy now.
Developer: IcloudCenter
License: PHP License
Operating System: Not Available