CHANGER is an automatic platform that streamlines the exchange from one digital currency to another digital currency in an instant manner. No account needed! If you do create an account, however, you get access to the Discount System. The platform works automatically. You can change Bitcoin to Litecoin or Litecoin to Bitcoin instantly, for example. Just select the exchange direction and follow the instructions.
They are also in the process of developing exchanger.com and obmen.com (“exchange” in russian). Both domains currently just redirect the traffic to changer.com.