Coinbase is a leading digital currency platform and wallet where sellers and buyers can transact with new types of digital currencies such as Bitcoin, Ethereum, Litecoin, and Bitcoin Cash. The exchange was founded by Brian Armstrong and Fred Ehrsam in 2012 and is based in San Francisco, California. They focus on the US market, however, the company currently operates in 31 countries and offers storage of bitcoins in 190 countries around the world.
Bisq exchange was launched back in 2014. At that time it was one of the first Decentralized Autonomous Organizations (or simply DAO). According to the founders of this exchange, one of the goals of Bisq network is to "keep the original spirit of Bitcoin alive".
Quppy is a decentralized lending and payment service and the licensed multicurrency payment system. Quppy was developed in 2017 by recognized experts in banking, financial and information security, who previously worked for leading world companies. Quppy is a payment solution for all types of banking transactions with Bitcoin, Bitcoin Cash, Litecoin, Ethereum and fiat currencies in euros.