Pretty much all social trading forex brokers offer at least some of the most popular currency pairs for trading. The difference between these brokers then largely comes down to how many currency pairs they offer, how low the spreads are, what the commissions are, and on which trading platforms the instruments can be traded.
While some social trading brokers offer currencies on their designated social trading platforms, others offer them only on traditional trading platforms like the MT4 & 5, and some also offer them on several different trading platforms. Whatever the case may be, currencies remain one of the most popular trading instruments that exist. The currency market, often referred to as the forex market, also enjoys unmatched liquidity, with trillions of dollars changing hands every day.