Auction Technology Group plc operates online auction marketplaces in the United Kingdom, the United States, and Germany. It runs two segments: Arts and Antiques, and Industrial and Commercial. Its marketplaces include thesaleroom.com, liveauctioneers.com, lot-tissimo.com, EstateSales.NET, BidSpotter.com, BidSpotter.co.uk, proxibid.com, and i-bidder.com. The company also offers auction house management software (Wavebid), digital auction technology (Auction Mobility), a real-time audio and video marketplace (Global Auction Platform), and the Antiques Trade Gazette. Additional services include atgPay, atgShip, atgAMP, and auction trading software. Founded in 1971, it is headquartered in London, United Kingdom.