Satoshi Tango
This is a good exchange if you are outside of the area supported by Coinbase, such as South American countries, especially Argentina.
4 Alternatives To Satoshi Tango
Ripio
This exchange has very few options, however, it’s one of your best options if you are in a South American country which is not supported by Coinbase.
Uphold
Move, convert, transact and hold any form of money or commodity. Instantly, securely and for free.
Virwox
Buy using Paypal or Credit card