Top MQL4 and MQL5 source codes based on user ratings

Forget about BMP files like a bad dream. Thanks to this library, you can now use the PNG format, which has a number of advantages, such as being more compact without losing image quality and maintaining transparency.

The Heiken Ashi indicator with no repaint or repaint mode input option.

Easy to use.

Another ZigZag. ZigZag

Unfortunately, I discovered that some brokers are a bit sloppy with the server time change due to the daylight saving time (DST), which I did not expect and which surprised me a lot. Here is a script with which anyone can check their broker.

Script

A set of classes for automatic moving of StopLoss of open positions by fixed indentation or by values of Parabolic SAR and moving averages indicators, or by specified position stop level.

A system to test up to four indicators concurrently in the strategy tester

combination of many familiar indicators for beginner traders

The Playground EA series was created for experimentation with Fair Value Gaps (FVGs) and liquidity concepts

RiskSizer Panel Lite is a simple MT5 trading panel that calculates an estimated lot size based on your risk percent. Drag two chart lines to set SL/TP, then use one-click BUY/SELL for fast manual execution.

Draws colored range boxes for the Asian, London, and New York sessions on any chart. Includes a stats panel showing average session ranges in pips and optional breakout alerts when price exits a session box.

This EA serves as a template for traders interested in automating strategies in MT5. It implements a Moving Average crossover system and can be used as-is or customized by adjusting its settings. The free source code is designed to be easily modified for adding new indicators, logic, and trading features.

A professional intermarket analysis tool. It overlays the USD Index (DXY) on any chart to identify SMT Divergences and institutional correlation shifts in real-time.

Chart Water Mark Transform your MetaTrader 5 charts to look as elegant and professional as TradingView.

Quantora Symbol Information Panel MT5 - Professional Trading Specifications Dashboard

Professional open-source Multi-Timeframe MACD Dashboard for MetaTrader 5. Analyzes MACD Main, Signal and Histogram across M1, M5, M15, M30, H1, H4 and D1 with an overall momentum score and market bias.

Professional open-source Moving Average Dashboard for MetaTrader 5. Monitors EMA 20, EMA 50, EMA 100, EMA 200, SMA 50 and SMA 200 with price position, trend structure, MA Score and overall market bias.

Open-source MT5 indicator for confirmed market structure, volumetric order blocks and estimated buy/sell activity.

Automatically detects swing pivots and labels a rule-validated Elliott Wave count (1-2-3-4-5 impulse and A-B-C correction) directly on the chart, with a Fibonacci info panel. For guidance only, always confirm manually.

Marks the start/end of up to three trading sessions (Asian, London, New York, or any custom windows) with vertical separators and/or shaded background boxes, repeated daily across a rolling recent window. Purely visual — no calculations, no signals, just clean session boundaries.

A clear MT5 market structure indicator that labels confirmed HH, HL, LH and LL swings directly on the chart.

A broker time session map for MT5 that displays Asia, London and New York ranges with their confirmed highs and lows.

Draws Sydney, Tokyo, London and New York as high/low boxes with the London-New York overlap outlined and the rollover hour shaded. Session times in GMT, broker offset detected automatically, average range of the last N sessions on every label, optional alert at session open.

Four EAs on the same symbol, each one honest on its own: each checks "do I have a position?" with its own magic number, sees none, and enters. On a demo account this reached 22 contracts on a symbol meant to carry 1, and a watchdog had to close 16 positions in one morning. The cap belongs at the door, not after the fact. ExposureCap::Allowed(symbol, lots, cap) sums the volume of every open position on the symbol - all magic numbers, manual trades included - and refuses the order BEFORE it is sent when it would breach the cap. One log line with the three numbers (held, requested, cap) says why. Deliberately simple: gross exposure, no netting of longs against shorts, no per-EA quota. It is a check, not a lock: two EAs deciding on the same tick can both pass; in practice EAs on different charts decide on different ticks. The demo script prints held / cap / room for the current symbol and shows the refusal line. Nothing is traded.

Your statement tells you what you KEPT. It does not tell you what you HAD. This indicator reads your own closed trades from the account history and draws, for each one, the full range it travelled: the best unrealised profit it ever showed (MFE) and the worst unrealised loss it survived (MAE). The gap between what a trade showed and what it paid is where two common problems hide, and neither is visible in a balance curve: winners closing far below their best point (the exit leaves money behind), and losers whose worst excursion barely passed the stop (the stop sits inside the noise). The number to look at is the CAPTURE RATIO: of the profit a winner showed at its best, how much did you take home? 90% says the exits are well placed; 30% says the market kept offering and the exit kept refusing. Limit, stated up front: excursions come from the bars each trade spanned, on the chart timeframe; the path inside a bar is unknown. Predicts nothing; measures trades that already happened.

Exports one CSV line per closed trade with the numbers a statement does not carry: the best unrealised profit the trade showed (MFE), the worst unrealised loss it survived (MAE), how much of the MFE was actually kept, how many bars it spanned, and how long it was held. Same measurement as the Trade Excursion indicator, written to a file instead of drawn, because the questions worth asking of this data are ones a chart cannot answer: does the capture ratio depend on the hour of entry? Are the trades I close early the ones I hold longest? Do losers on Mondays reach a different MAE than on Fridays? Those are one pivot table away once the CSV exists. Output is semicolon separated with a header row, in MQL5\Files; opens in any spreadsheet. Measurement limit: excursions come from bar highs and lows on the chosen timeframe; the path inside a bar is unknown. The bars column reports the resolution each trade got, and the summary counts single-bar trades separately instead of averaging them in.

Three position-sizing protections that do different things; confusing them is why so many accounts get wiped out: - ladder: one contract per X of balance, always applied as a CAP, even with manual lot sizing; - floor: below the minimum capital it does not trade; a new deposit is needed; - breaker: stops at X% below the peak, at any account size, and does not rearm by itself. What this library solves and almost none does: a deposit is not profit, and a withdrawal is not a loss. The breaker measures the drop against the balance peak. Untreated, a deposit made DURING a drawdown lifts balance and peak together, and the protection stops seeing the drop exactly when it would help. Here deposits and withdrawals shift the peak by the same amount. The peak is persisted to a file: a breaker that forgets the peak on a terminal restart is not a breaker. The demo simulates a deposit at the bottom of a drawdown. Run it with the deposit on and off and compare the "drop" column.

Finds the weekend CME gap on gold and on 24/7 Bitcoin charts, keeps every unfilled gap on the chart until price returns to it, and shows how often gaps filled, how fast, how far price ran first, and what fading them would have made. Non-repainting, with buffers for an Expert Advisor.

Draws Asian, London and New York session range boxes and marks liquidity sweeps: a closed bar that wicks beyond a completed session's high or low and closes back inside. Non-repainting arrows, extended session levels, alerts and iCustom-ready buffers.

An opening range breakout Expert Advisor that places stop orders a set distance from the session open, with optional NR4, NR7, inside-day and 3-bar narrow-range filters and a no-filter control mode for testing.

An include file that writes real Excel workbooks (.xlsx) from MQL5 without DLLs: several sheets, numbers, text and real Excel dates, a frozen bold header and filters. Example script: the account deals and the daily results to Excel.

Marks the order block behind each break of market structure (the last opposite candle before the move), tracks when it is used and turns failed blocks into breaker blocks. No repaint. Alerts and buffers for EAs.

ICT kill zones (Asian, London, New York, London Close) at the right New York hours on any broker, with US and EU summer time. High / low boxes, levels until price takes them, midnight open. Alerts and buffers for EAs.

Calculate DST for USA, EUR, AUD and RUB and the offset time of the broker automatically from the 70's until 2030 - even in the Strategy Tester of MQ.

The final seventh part of the book discusses the advanced capabilities of the MQL5 API, which will be useful when developing programs for MetaTrader 5. These include custom financial symbols, built-in economic calendar events, and general-purpose technologies such as networking, databases, and cryptography.

This indicator displays current events on the chart and allows you to export the calendar to archives for backtesting, automatically fixing time discrepancies between the history of bars and the history of events. This is an improved version of CalendarMonitorCached indicator from the algotrading book.

The SuperTrend Indicator is a dynamic trend-following tool based on ATR. It plots a colored line above or below price to indicate bullish or bearish conditions. When the price crosses the line, a signal arrow appears. Fully customizable with ATR period, multiplier, arrows, labels, and colors. Suitable for all instruments and timeframes. Ideal for scalping, swing, and intraday trading. Combine it with other indicators for stronger setups.

In Part 5 of the book, we'll delve deeper into the APIs associated with algorithmic trading, including financial data analysis and processing, chart visualization, automation, and user interactions.

Working with keyboard data