Stellar is a public blockchain platform that uses the Stellar consensus protocol (SCP). The node that finds next valid block is chosen by federated byzantine agreement. This makes the blockchain centralized permission based, as opposed to decentralized blockchains like Bitcoin or Ethereum. Stellar is a community driven open source project launched in November 2014 and written on C++. It is maintained and supervised by non-profit organisation Stellar.org.
Stellar is mainly used by Money transfer companies like Tempo, Eurochange and TransferTo and mobile financial services providers like Coins.ph.