Bitstamp is Luxembourg-based crypto exchange, allowing its users USD, EUR, BTC, BCH, LTC or XRP deposits and withdrawals. Bitstamp was founded in 2011 as a European-focused alternative to then-dominant bitcoin exchange Mt. Gox.

Kraken is a US-based crypto currency exchange operating in Canada, the EU, Japan, and the US since 2011. It is "the world's largest Bitcoin exchange in euro volume and liquidity". Kraken provides Bitcoin pricing to the Bloomberg Terminal. 

Binance is a global crypto currency exchange that provides a platform for trading more than 100 crypto currencies. Since 2018, Binance is considered as the world's biggest crypto exchange in terms of trading volumes.

Bittrex is a US-based crypto exchange. It has a strong policy of delisting crypto currencies that do not meet its listing requirements, what makes it a safer exchange. Bittrex's founders previously worked as security professionals at Microsoft.

Bitfinex is a crypto currency trading platform, founded in 2012. It claims to offer the most liquid order book in the world, allowing users to easily exchange Bitcoin, Ethereum, EOS, Litecoin, Ripple, NEO and many other digital assets with minimal slippage.

OKEx is a crypto currency exchange based in Hong Kong, founded in 2017. It provides hundreds of tokens and futures trading pairs. OKEx's BTC futures trade has nearly $1.5 billion of volume daily and is widely recognized as the gold standard for the industry.

CEX.IO is a cryptocurrency exchange and former Bitcoin cloud mining provider. Founded in 2012 and based in London, CEX.IO is an online digital currency exchanger, offering Crypto to Fiat (including USD, EUR and GBP) conversions and vice-versa.

HitBTC is leading European exchange, providing crypto trading services to individual traders, institutions and merchants. It provides trading operations for the most popular digital currencies, including BTC, LTC, NXT, FCN, XMR and DOGE.

Founded in 2018, BeQuant is owned by HitBTC. It claims to offer access to real liquidity of over $150 million in average daily traded volume. The BeQuant team of FCA compliant brokers and Blockchain specialists has been in the business since 2012.