The Vortex Oscillator Indicator is a useful tool for Forex traders. It is a popular indicator for MT4 that is free to download and use. The Vortex Oscillator Indicator is based on the idea that the price of a currency pair will often move in a vortex-like pattern, with the trend being strongest when the oscillator line is above zero. The Vortex Oscillator Indicator is a great tool for traders because it is easy to use and can help traders identify strong trends quickly.