BITBOX is a Singapore-based cryptocurrency exchange launched in 2018. The team behind this platform is better known for a different project — messaging app LINE. The exchange is not available for the American citizens and doesn't support fiat money yet, but allegedly these problems are going to be addressed in the future. The trading volume is relatively low on BITBOX. By all valuations, this exchange ranks below the 100th position.
Blockchain Exchange is a high performance multi-crypto exchange engineered and powered by the Blockchain.com. It supports pairs such as BTC/USD, BTC/EUR, BTC/ETH, BTC/GBP, BTC/PAX, BTC/ETH, and many more.
Bittrex was founded in 2014 in Seattle, USA. There is also a Bittrex International division, which is based in Europe. The list of coins and pairs is reaching hundreds which is great for many trading opportunities.