The Market Sessions Indicator is a free and popular Forex indicator for MT4. It is a useful tool for traders to identify the active trading sessions for different currency pairs. The indicator displays the start and end times of the major trading sessions in the Forex market, including London, New York, Tokyo, and Sydney. It also shows the current session and the time left until the next session. The Market Sessions Indicator is a convenient and powerful tool for traders of all levels to get a better understanding of the Forex market.