Kraken is good if you're looking to directly buy altcoins with the fiat currency like U.S. dollars. Some customers have complained that the exchange has poor customer support, though. Kraken is a secure and scalable layer that extends express by providing structure and convention. We provide clients the ability to deposit funds to our corporate wallet for safekeeping while the funds are being exchanged or used for trading, but we do not provide a personal wallet service.
Website: https://kraken-logint.yahoosites.com