Kleinanzeigen.com is an online classifieds marketplace presented as a virtual flea market, where individuals and businesses can browse listings or post their own ads. The site promotes free, quick ad placement, with listings available online immediately, and describes its service as free of commission charges. Users can search by category and location, save listings, and access help and account features.

Its categories cover a broad range of everyday needs, including cars and motor-related items, real estate, jobs, services and courses, leisure and personal contacts, exchanges, rentals, vouchers, tickets, food and drinks, and general marketplace goods. Listings include both new and used items, supporting buying, selling, giving away, and swapping. The site highlights popular searches such as homes, jobs, used cars, motorcycles, clothing, and household appliances, and refers to listings across German cities including Berlin, Hamburg, Munich, Leipzig, and Cologne. Kleinanzeigen.com also provides site information such as safety guidance, terms, contact details, and privacy information, helping users navigate its classifieds service.