We have built a single digital platform that scales for multiple verticals, regardless of their stage of online development. Expert auctioneers curate thousands of auctions, and provide a level of trust not seen elsewhere in the secondary market.

Facilitating the sale of 12 million items annually by matching goods to buyers at the best available price, ATG combines technology and market expertise to deliver phenomenal results for businesses and informed consumers with limitless possibilities to expand further.

Our Platform & Services


ATG's secondary goods digital marketplaces


Proxibid.com is the largest online marketplace in North America for connecting bidders and auctioneers of highly valued items across 16 categories from agricultural machinery to classic cars.


BidSpotter.com is North America's leading specialist auction marketplace for industrial equipment and commercial vehicles, connecting buyers to thousands of auctions every year.


thesaleroom.com is Europe's leading auction marketplace for buying art and antiques at auction. Listing anything from kitchen tables to Dodo skeletons, Picassos to antiquities, autographs to Diana’s dresses, ‘mantiques’ to teddy bears or coins.


Lot-tissimo.com is Germany’s leading auction marketplace, acquired by ATG in 2018. Partnering with auctioneers across Germany, France, Spain, Italy, Switzerland, Belgium, Netherlands and Austria.


i-bidder.com is the UK’s leading auction marketplace for returned and surplus consumer product. With a national network of auction houses, i-bidder.com connects millions of visitors with hundreds of millions of pounds of consumer goods each year.


BidSpotter.co.uk is the leading auction marketplace in the UK chosen by insolvency professionals for the efficient disposal of business assets. Trusted by RICS auctioneers, BidSpotter.co.uk brings a global online audience to high profile insolvency auctions from all over the world.

Global Auction Platform (GAP Toolbox)

Global Auction Platform (GAP Toolbox) powers ATG’s digital marketplaces. We are the world leader hosting live and timed auctions across multiple brands each day, with real-time audio and video broadcast.


Wavebid offers an industry-leading suite of products designed to simplify auction management featuring tools for cataloging, clerking, accounting, and marketing.