The Gold Trade Pro Expert Advisor (EA) you're referring to seems to be a proprietary or commercial EA that is specifically designed to trade gold (XAU/USD). Unfortunately, as with most commercial EAs, the MQ4 source code is typically not publicly available unless the developer provides access to it. Developers generally distribute the EX4 compiled file, which is executable in MetaTrader 4 (MT4), but not the underlying MQ4 source code, to protect their intellectual property and prevent unauthorized modifications or replication.

The Gold Trade Pro EA V3.3 MT4 is an automated trading system designed specifically for trading gold (XAU/USD) on the MetaTrader 4 (MT4) platform. It likely uses predefined strategies to automate trading and manage trades without the need for manual intervention. The SetFiles are configuration files that come with the EA and store optimized settings for various market conditions, timeframes, and strategies.

The Gold Reaper EA V1.5 MT4 is an Expert Advisor designed for MetaTrader 4 (MT4) to automate trading for gold (XAU/USD), one of the most popular and volatile assets in the forex market. This EA likely uses algorithmic trading strategies to make decisions on when to buy and sell gold, potentially aiming to capitalize on price swings and market trends. The SetFiles that accompany the EA are pre-configured settings designed to optimize the EA's performance under different market conditions, allowing traders to apply them with just a few clicks. These files are essential because they save traders from manually adjusting every parameter in the EA, offering a quick way to start trading with the EA under different conditions or strategies.