Three Metatrader platforms with crypto-charts active on weekends
Particularly interesting remains to operate during TRIBTC (crypto broker peer to peer with traders against traders) and CryptoBO. They operate with Bitcoin with minimum amount of trade.
Comments on the platforms can be found on the Chat Telegram TRIBTC and CryptoBO.
On MT4 it is of course possible to install any custom indicator, and than open operations manually on the crypto broker.
In addition to the previous two you can also try SimpleFX which seems to have more sensitive movements. The demo, like the others, is free. Of the three, Simple FX seems the best.