The world of the Forex use several trading platforms all around the World. Like Mt4, Mt5, Ninja Trader, JForex, Trading Station, Protrader, Nanotrader, E*Trade
DT Ameritrade,Option House, cTrader, cAlgo, Desktop TWS, Awa Trade Go, and many-many more. Most of them has mobile and web trader functions too. All the others you can find here.
The most populars about the listed and non listed trading platforms the Mt4, and very much coming up the cTrader with cAlgo.