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Cryptomus - Cryptocurrency payment system for business and not only.
Exodus.io - All-in-one app to secure, manage and exchange blockchain assets.
CoinPayments - Payment gateway providing buy now buttons, shopping carts, and more to accept Bitcoin, Litecoin, and other cryptocurrencies/altcoins on your website/online store.
Toshi - A browser for the Ethereum network
BitPay - Bitcoin payment gateway. Enterprise-grade solutions, from the pioneer of bitcoin payments.
MyEtherWallet - MyEtherWallet is a free, open-source, client-side interface.