The best alternatives to bitmex are Coinbase, Poloniex, and n.exchange. If these 3 options don't work for you, we've listed a few more alternatives below.
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Nexchange is the easiest way to convert cryptocurrency, securely and transparently. Want to talk to us? Join our Slack community here: https://nexchange.typeform.com/to/lpyAtX
Based in San Francisco, Kraken is the world’s largest global bitcoin exchange in euro volume and liquidity. Kraken’s clients also trade USD, CAD, ETH, XRP, LTC and other digital currencies, on a platform consistently rated the best and most secure bitcoin exchange by independent news media.
A one-stop place with useful widgets showing major screens where you can see all updating together along all the major FnO parameters. You can even drill down by lots of metics, back testing tools, modules of popular Trading System Calculations.
Bitget is one of the leading crypto derivatives trading platforms. Bitget provides a wide variety of contract products: USDT Paired contracts, and Inverse contracts which are also customized for beginners.