OneBid is an online auction platform connecting buyers with auction houses and sellers through live auctions. Its catalog spans a broad range of collecting and cultural interests, including paintings, prints, sculptures, Asian art, coins, banknotes, medals, stamps, books, manuscripts, maps, photography, jewellery, watches, antiques, furniture, ceramics, glassware, militaria, toys, and memorabilia. Users can explore dedicated auctions for art, coins, books, stamps and postcards, military items, and investments, as well as browse current, upcoming, and completed sales.

The platform provides searchable listings, auction calendars, archives, category browsing, and tools to help users discover lots and participate in bidding. OneBid also offers guidance for newcomers through first-step instructions, a help centre, and frequently asked questions. Its auctions feature works and collectibles from a range of specialist auction houses, with listings that may include descriptions, images, estimates, and scheduled bidding times. Available in multiple languages and supporting a wide selection of currencies, OneBid serves an international audience interested in buying and exploring art, numismatic items, books, and other collectibles.