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 Chart Quick-Tools are a suite of scripts for modifying all open charts simultaneously in both MT4 and MT5. They allow you to apply indicators to all charts or synchronise settings such as colours and zoom levels from one chart to the rest.
MT4 Auto-restart detects problems with MT4's connection to its broker, sending email alerts and automatically restarting the MT4 instance - which is usually enough to clear any connection problem. An essential for any serious MT4 user.