Stamp World

Founded by Danish philatelist Ole I. T. Nielsen and launched in 2011, Stamp World aims to be the leading online resource for stamp collectors (philatelists). The platform combines the world's largest online stamp catalogue with a comprehensive C2C (consumer-to-consumer) marketplace, allowing users to manage their personal collections, connect with other collectors, and buy or sell stamps. The company's legal entity is Stampworld ApS, and it serves a global community of over a million users across more than 225 countries.