Any broker using MT4 can use an EA :) except you can't install an EA on the Android or apple MT4 platform, only windows or mac (Linux you can, but have to install and run it through wine).
I don't actually use any other EAs or scalpers, just FXvoodoo :) some are pricey, but to be fair it's paid for itself 10x over
RE: Everyone has been asking me for information on my FX trading, here is everything I know and use