Metatrader 4.0 is a powerful tool for trading. Metatrader 4.0 is fully compatible with forex automated trading robots. Expert Advisors are used in forex trading so the user can use fully automated forex trading. An expert advisor can be back tested on the metatrader so it is possible to see what the forex trading results would be like over historical data. This version of metatrader is the latest and has an auto update feature. This software is made available from best mt4 brokers.