Retail Auction Site : This software, written in Python and Qt, provides a complete network-based Point-of-Sale software solution for an auto auction company. The program currently interfaces with a MySQL database hosted on one of the companies machines and can be installed on any number of machines that act as clients and connect to the database.
EveryAuction is a well-known free Perl online auction application. Many modifications and add-ons have been contributed by the community. See the EveryAuction home page for details about contributing.
BOM (Visual Basic) is a tool to watch and bid on auctions. Many features like mail control, autoconnect/disconnect, integrated ODBC- client, multi-language-support, time sync, item grouping etc.