The TSI Indicator is a popular and free Forex indicator for MT4 trading platforms. It is a useful tool for traders who want to identify trends and potential trading opportunities in the Forex market. The TSI Indicator helps traders identify trends by combining the momentum and trend of price action. It is composed of two oscillators, one for measuring the trend and one for measuring the momentum. The TSI Indicator is a great tool for traders who are looking to identify trends and potential trading opportunities in the Forex market.