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Kuna exchange is the Ukranian company led by Michael Chobanyan and operated by the group of companies registered in England, British Virgin islands and Estonia. It was founded in 2017. 
Coinigy is a great platform that gives you the ability to combine all of your wallets and exchange accounts in one interface using API keys from all different exchanges. The platform was founded in 2014 by a group of dedicated developers, traders, analysts, and evangelists that believe in the global crypto-financial industry.  
P2B is a centralized cryptocurrency platform, that offers more than 200 tokens. It covers the following markets: BTC, ETH, USD, EUR, and a number of stablecoins.