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SwapSpace is a crypto exchange aggregator that doesn't require registration. The platform provides an opportunity to swap around 300 cryptocurrencies suing fixed and floating rates. SwapSpace has a row of partnerships with such significant companies as Changelly, ChangeNow, and SimpleSwap. The main priority of SwapSpace is saving its customers' time by doing much of the work for them. The platform strives to provide its customers with trading at the most profitable rates. All the rates are gathered and displayed at one tab so the traders can compare the prices and make decisions on what to buy or sell without any hassle. The users can get assistance from the support team that works 24/7. What makes SwapSpace especially comfortable and transparent is the fact that is doesn't collect any fees above the fees charged by the partner exchanges. 
ChainX is a centralized exchange based in Korea, launched in March 2019. It provides investors with access to KRW fiat/cryptos pairs, charging zero deposit fees. 
Headquartered in Estonia, ATAIX is a digital asset trading platform. It provides digital assets trading services such as Bitcoin and Ethereum to users around the world. Fees can be as low as 0%. The fee schedules are volume-based. The more the user trade, the lower its rate.