OceanEx is a centralized cryptocurrency exchange founded in November 2018. The company has headquarters in the Cayman Islands. Among the core members of the OceanEx team, there are people who worked in CISCO, Samsung Research, Baidu, Morgan Stanely, and some other big companies.
BigONE is a centralized cryptocurrency exchange. The exchange was launched in 2017. Its reported volume is about 180-200 mln. $. BigONE has 117 available trading pairs and 75 coins. Deposits are free on the exchange. BigONE doesn't have fiat deposits option. Margin trading option is not available on the exchange.
Withdrawal fees can reach up to 0.0002 BTC.
Altilly is a Sweden based exchange. It was launched in 2018. The exchange has a big variety of coins (about 300). Despite that variety, the liquidity of the platform is quite low, fluctuating within 80 – 100 k $ per day. Altilly exchange is not available for traders from the USA.