Founders: Arthur Britto and Chris Larsen
Ripple is an open peer-to-peer payment network, but it also has its own digital currency – called Ripple XRP. It positions itself as more of a complement to Bitcoin than a rival cryptocurrency. The site even has a “Ripple for Bitcoiners” section – and the Ripple network allows for the transfer of any type of currency – from euros to Litecoin. You first need to buy Bitcoin.