Toshi - A browser for the Ethereum network
Coinbase - Bitcoin, safe and easy.
MyEtherWallet - MyEtherWallet is a free, open-source, client-side interface.
Bitcoin Wallet API - New API with proof-of-concept Chrome extension
Exodus.io - All-in-one app to secure, manage and exchange blockchain assets.
Mobi - A highly secure mobile bitcoin wallet with 60+ currencies