You can download the best MT4 and MT5 Forex indicators from MQL5 for free. The listed indicators can be used on the MetaTrader platform to improve your Forex trading performance. You can either design your own Forex system by using these indicators or you can use them as trading signals. Another possibility for you is that you can modify the code of the indicators to scale them in accordance with your requirements. You will need a MT4 or MT5 Forex broker trading account to use these indicators.