sedo

With more than 2 million member accounts from around the world, and trading domains in more than 25 languages, Sedo stands alone as the world's only global domain marketplace.
Sedo’s marketplace connects buyers and sellers making it simple for individuals and companies to acquire the domain names they need for their success and online presence. Sedo’s domain marketplace is the most active in the industry and offers the world's largest selection of premium domains with more than 19 million available for sale!
Sedo offers all the tools needed to buy, sell, and monetize domains including domain appraisals, brokerage services, promotion and Sedo's popular domain parking program. Members use Sedo’s parking program to earn revenue on more than 4 million domains while promoting those domains for sale.