Bitpanda is a digital currency investing service, launched in 2014 which allows its users to buy crypto with Fiat (EUR, USD, GBP, and CHF). The exchange supports 30+ coins for purchase. The exchange is completely open and does not hide information about the license and the team, so many trusts it. More than a million people visit the official website of the exchange daily. The service is available in 3 languages: English, German and French.
Korbit was the first exchange to introduce BTC/KRW trading in South Korea, and it's currently active in 30 markets where some of the top cryptocurrencies can all be traded against KRW. The platform also offers a trading API that supports automated trading.