MetaTrader 5 (MT5)

MetaTrader 5 was released by MetaQuotes in 2010 specifically to fix the glaring architectural limitations of MT4. While MT4 was built strictly for decentralized Forex, MT5 is a true "Multi-Asset" platform. It connects directly to centralized stock exchanges, allowing traders to trade physical stocks, futures, and options alongside Forex from a single interface. Despite being vastly superior mathematically, it initially failed to replace MT4 because MetaQuotes made a fatal error: MQL5 (the new coding language) was not backwards compatible with MQL4. Millions of traders whose entire livelihoods depended on their complex MT4 trading bots refused to migrate because their bots wouldn't work on MT5. However, in recent years, MT5 has seen a massive resurgence as new brokers increasingly push it over the legacy system. It features incredibly advanced backtesting capabilities. A trader can write an MQL5 bot and mathematically simulate its performance against 10 years of historical stock data, utilizing the "MQL5 Cloud Network" to borrow CPU power from thousands of computers around the world to complete the complex math in minutes instead of days.