With mond.reise you can currently trade on 3 exchanges: BitMEX, Deribit and FTX.
BitMEX
BitMEX is the pioneer of perpetual swap contracts. It exists longer than all alternatives, had some dispute with US authorities, though. Still, there technical security standards appears to be quite high. Founders have background in traditional finance exchange that offered Use Bitmex if you are fine with using Bitcoin as margin. Your account value will be hedged neutral to US Dollar. It has maker rebates for new users.
- Trades XBTUSD (Bitcoin Perpetual) and ETHUSD (Ethereum Perpetual)
- Fast & easy registration with ID verification
- Bitcoin deposits only
- Maker Rebate: 0.025%
- No Fiat, only Bitcoin
- Legal issues (US Financial Authorities)
- Controversial Reputation due to down times
Deribit
Deribit is the „safer“ (regarding laws) alternative to Bitmex. You can only deposit Bitcoin and Ethereum.
FTX
You can directly deposit EUR via SEPA Transfer and Credit Card. Maker fees are 0.019%, reducing the expected return.