Kleinanzeigen.com is an online classifieds marketplace and virtual flea market where individuals and businesses can post and browse advertisements. The platform presents itself as a free, quick and straightforward way to connect people who want to buy, sell, give away or trade new and used items, with no commissions. Users can search listings by location and category, or create an advertisement online; account registration and login, saved listings, help and search filters are also available.

Its categories cover a broad range of needs, including cars and motor vehicles, property, jobs, services and courses, leisure and personal contacts, and general marketplace goods. The site also features sections for vouchers, tickets, food and drinks, exchanges, and renting or letting. Example listings and search topics include homes, used cars, motorcycles, clothing and household appliances. Kleinanzeigen.com serves users across German cities such as Berlin, Hamburg, Munich, Dresden, Leipzig, Stuttgart and Cologne. The website provides information on safety, terms, payment methods and customer support, alongside contact details and a newsletter option.