Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
Phonebot - Make phone calls from within a Slack channel
Bitcoin Wallet - Bitcoin Wallet is a mobile application that allows you to send and receive digital currencies.
WING - A phone carrier that is actually nice to you.
BitStamp - Provide reliable and easy to use service for companies and individuals to exchange bitcoins.
ShareAccount - Share your account without giving out your password