Stellar

Stellar is a decentralized protocol for sending and receiving money in any pair of currencies. This means users can, for example, send a transaction from their Yen balance and have it arrive in Euros, Yen, or even bitcoin. We’re expecting to support the usual categories of transactions: payments to a merchant, remittances back home, or rent splits with a roommate.

You can hold a balance with a gateway, which is any network participant you trust to accept a deposit in exchange for credit on the network. Stellar also comes with a built-in digital currency, referred to as the stellar, which we’re giving away for free. The currency will have value (as determined by the market); however, its primary function is providing a conversion path between other currencies.