The Personal Trade Copier duplicates trades between any installations of MT4 or MT5 on the same computer - simply use the MT4 EA in MT4, and the MT5 EA in MT5. Supports any broker. Copying is almost instant, limited only by your broker's speed. Hundreds of settings, including the ability to change lot sizing and risk, invert trade direction, control which trades are copied, and even extend the copier with your own MQL code.
The MT4 and MT5 versions are compatible with each other - you can copy trades in either direction between MT4 and MT5. Simply download and install the MT4 EA in MT4, and the MT5 version in MT5.