A registrar is a company that works together with the Registries and enables the registration of domain names to consumers. Registrars play an essential role because very few registries allow consumers to buy domains directly from them, In that sense a registrar works like a supermarket. It buys the products from the factories (registries) and offers them to their customers.
The advantage of a registrar is that they offer all sorts of extensions and products, which saves end users time and trouble. Instead of having to order a foreign domain from the respective registry in a different language, users simply go to their local registrar who then acquires the domain name from the respective registries for them. For example, at Octopoly we offer over 700 domain extensions from all around the world.