Commercial auction software is a computer program used in conducting commercial auctions. It provides an online platform for buyers and sellers to engage in bidding and negotiations, and manages the auction process. Commercial auction software can be used to sell goods and services, raise money for charity, or liquidate real estate holdings.

A simulcast auction is an online auction platform that allows buyers and sellers to participate in a live auction simultaneously. The platform facilitates the sale of items through a bidding process, which allows bidders to submit bids in real-time. Sellers can also set up automatic bids, which allow them to increase the amount of their bid as the auction progresses. Simulcast auctions are popular among collectors because they provide a more realistic experience than traditional online auctions.