Coinmama was founded in 2013 with the mission of simplifying the way the world buys Bitcoin. Coinmama is a Bitcoin trading platform that allows users to purchase virtual currencies online using e-wallet, credit card, debit card or cash. Coinmama also sells Ether, Ripple, Litecoin, Cardano, Qtum. The company is based in Slovak Republic. Available currencies in Coinmama are USD, EUR, GBP, CAD, AUD. [source]
Bitfinex was founded in December 2012 as a peer-to-peer Bitcoin exchange, offering digital asset trading services to users around the world. Bitfinex initially started as a P2P margin lending platform for Bitcoin and later added support for more cryptocurrencies.
In 2015 the exchange's customers were hacked, losing about $400,000, and in 2016 about $73 million more was stolen from its customers' accounts. [source]