Coinbase - Bitcoin, safe and easy.
Wall of Coins - Wall of Coins simplifies buying and selling Bitcoin, and no one else comes close! Wall of Coins and every participating app directly connects buyers and sellers.
Exodus.io - All-in-one app to secure, manage and exchange blockchain assets.
changelly - Exchange alternative cryptocurrencies.
Uphold - Move, convert, transact and hold any form of money or commodity. Instantly, securely and for free.
BitStamp - Provide reliable and easy to use service for companies and individuals to exchange bitcoins.