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 Data Integrity Checker analyses the data being used in MT4 backtesting and reports on common problems: missing bars in the data, incorrect spikes in prices, .fxt files exceeding 2GB (which cannot be correctly processed by MT4).
QuickChannel is a library for sending messages between copies of MT4 running on the same computer (or between EAs/scripts running in the same installation of MT4). QuickChannel can deliver messages in less than 1 millisecond.