MetaTrader 5
Experts
Indicators
Scripts
Libraries
StorageJoin our fan page
MQL4 and MQL5 Source Code Library
You don't know where to start learning the MQL5 or MQL4 programming language? Various programs for your MetaTrader terminal are available here. Download and study published code examples, develop your own indicators and Expert Advisors. Publish your applications in the largest library of MQL5 and MQL4 codes, and they will be available in every MetaTrader terminal and MetaEditor.
Your code examples in MQL4 and MQL5 will be distributed worldwide, and thousands of traders will know about you!
- Free trading apps
- Over 8,000 signals for copying
- Economic news for exploring financial markets
You agree to website policy and terms of use
Triple-barrier labeling pipelines frequently use an arbitrary constant (0.5–1.0%) or a legacy spread assumption as the min_ret threshold. A threshold set below the actual round-trip transaction cost causes the pipeline to label cost-driven noise as tradeable signal. The labeled dataset then systematically overstates edge, and any model trained on those labels overfits to an artifact of the labeling scheme rather than to genuine market structure. TransactionCostCollector.mq5 is a standalone script that resolves the data-collection step of this problem.
A quantitative volume density engine utilizing weighted Harmonic Mean mathematics to eliminate arithmetic outliers and map the true institutional liquidity center of gravity.
This custom indicator displays the ADX Wilder, +DI, and -DI lines together with Bollinger Bands calculated on the ADX main line in a separate window. It helps traders evaluate both trend strength and the volatility range of ADX values. The middle, upper, and lower bands can be used to identify ADX expansion, contraction, and potential strength breakouts. The indicator is useful for confirming trending conditions, spotting increasing momentum, and detecting when ADX moves outside its normal range. Input parameters allow adjustment of the ADX period, Bollinger Bands period, deviation, and applied price settings.
MQL5 implementation of the fixed-width fractional differencing (FFD) method from López de Prado's Advances in Financial Machine Learning (Chapter 5). Transforms a non-stationary price series into a stationary one while preserving maximum historical memory; output cross-validates against the Python afml library to within 1e-12.
A quantitative physics engine that applies differential calculus to price action, extracting true Market Velocity (1st Derivative) and Market Acceleration (2nd Derivative) to predict trend exhaustion before it happens.
A candlestick chart which colors OHLC candles based on directional price momentum and news impact
Automatically detect Inside Bar patterns, draw projection rectangles, and receive real‑time alerts – all in one powerful indicator. Swing And Full Margin trader
Institutional MACD is an advanced indicator designed for traders looking to trade in tune with smart money. Unlike the standard MACD, which processes each tick or candle close without distinction, this indicator reconstructs the price structure using a dynamic volume filter before calculating its moving averages.
An aerospace-grade state estimation algorithm that dynamically filters out market noise and manipulation wicks to reveal the true underlying execution price with zero static phase-lag.
Symbol Summary is a service for MT5 that opens a separate viewer window and shows a detailed report on a trading symbol. It supports Russian and English language, window resizing, scrolling, automatic report update when changing symbol or timeframe of the chart without restarting the service.
A quantitative Information Theory engine that calculates the Shannon Entropy of price distribution to mathematically measure market randomness and algorithmic predictability.
The Weekend Gap Statistics & Distribution Analyzer is a purely analytical MQL5 indicator designed to evaluate the historical behavior of weekend price gaps. It scans chart data to calculate gap closure rates and measures the adverse excursion (drawdown) experienced before a gap successfully closes. By providing statistical distributions—including the 70th and 90th percentiles of adverse heat—this tool enables traders to make data-driven decisions. It moves beyond simple averages, allowing traders to properly assess risk, filter out low-probability instruments, and optimize stop-loss placement when fading weekend gaps.
Chart Water Mark Transform your MetaTrader 5 charts to look as elegant and professional as TradingView.
Swap Monitor Panel is a lightweight, fully customizable indicator that overlays a live swap rate dashboard directly on your MT5 chart. It scans every symbol in your MarketWatch window and presents long swap, short swap, estimated daily cost, and weekly cost side by side — all in one clean, readable panel.
Interactive Correlation Heatmap using high-performance MQL5 matrix functions. > Features a draggable, minimizable dashboard with instant multi-timeframe switching and a vivid 5-band color scale for real-time currency relationship analysis.
Prime Quantum AI is an MT5 Expert Advisor combining a classical pre-filter (ADX + Alligator) with AI vision-based chart confirmation from major AI providers (Anthropic Claude, OpenAI GPT, Google Gemini, DeepSeek, xAI Grok). When the pre-filter detects a trend setup, the EA captures three adaptive- timeframe chart screenshots and sends them to the configured AI provider, which returns direction, confidence, stop-loss and take-profit. A trade is opened only when the AI confirms the pre-filter signal with sufficient confidence. Features: dual Standard Broker / Prop Firm risk modes, configurable lot sizing, optional martingale, multiple SL/TP modes, trailing stop, partial close, news/time/day/spread filters, draggable on-chart info panel, and fully exposed indicator parameters. Requires MetaTrader 5, WebRequest enabled for your provider's URL, and a valid API key. Provider auto-detected from key format.
A digital signal processing (DSP) engine that applies the Discrete Fourier Transform (DFT) to market data, isolating the dominant cyclical frequency to project turning points and eliminate phase-lag.
The Supertrend indicator plots an ATR-based dynamic trend line on the MetaTrader 5 chart, switching between a green uptrend and red downtrend line with optional buy/sell arrow signals at every trend reversal.
ASQ Order Executor — Institutional order execution wrapper for MQL5 EAs ASQ Order Executor provides institutional-grade order execution with automatic retry logic, slippage monitoring, partial fill handling, requote management, and comprehensive execution statistics. Drop it into any EA for production-ready trade execution.
Utility script that exports your MetaTrader 5 trading history to a CSV file. It automatically calculates Maximum Favorable Excursion (MFE), Maximum Adverse Excursion (MAE), and Forward Returns (Time-Based Excursions) in whole points for deep quantitative analysis in Excel. It will allow you to understand whether you close your trades too early and can help optimize overall trading execution.
A chart-cleanup + quick-trading layer for MT5
Self-Aware Trend System (SATS) is an advanced MQL5 indicator that combines an adaptive SuperTrend engine with a Trend Quality Index (TQI) dashboard, offering dynamic signal detection, risk management levels, and self-learning calibration for smarter, more reliable trade entries.
Daily Risk Monitor Lite is a lightweight MetaTrader 5 indicator that displays daily realized P/L, floating P/L, daily total, current drawdown, and color-based risk status directly on the chart. It is a read-only monitoring tool and does not close trades or block trading.
The script shows the usage of L1 Trend Filter methods in MQL5 for float and double vectors on random walk simulated data.
This EA implements a range breakout trading strategy. It calculates a price range between start and end times defined by the user, draws a visual rectangle on the chart to mark the high and low of that range, and then monitors price action after the range closes. If the market breaks above the range high, it opens a buy trade; if it breaks below the range low, it opens a sell trade.
A machine-learning inspired approach towards trending regimes. Providing accurate signals and backtest confidence built-in
Two adaptive moving averages that read the market differently. Crossovers signal trend shifts.
Candle countdown HUD with trading sessions (UTC), live spread and anomaly detection, daily range vs ADR, and market-closed state with reason (holiday / weekend / session). Holidays calendar included for seven major markets.
A predictive quantitative engine that replaces lagging retail ATR, it utilizes the Nobel-prize-winning GARCH(1,1) econometric model to mathematically forecast future market volatility and variance.
Precision Sniper is a multi-confluence MT5 indicator inspired by TradingView's top signal tools, grading every buy/sell signal (A+, A, B, C) based on EMA structure, RSI, MACD, ADX, VWAP, and volume alignment, with 8 presets, HTF bias confirmation, auto TP/SL levels, trailing stop, and a built-in backtest dashboard.
A quantitative multi-asset oscillator designed for Statistical Arbitrage (Pairs Trading), it calculates the logarithmic spread between two correlated assets and measures its Z-Score to identify risk-neutral mean-reverting opportunities.
Color your candles by momentum state. Four bias levels + neutral — built for dark charts.
Using arrow to open a position and the middle line to exit from the position that is currently open.
This EA implements a range breakout trading strategy. It calculates a price range between start and end times defined by the user, draws a visual rectangle on the chart to mark the high and low of that range, and then monitors price action after the range closes. If the market breaks above the range high, it opens a buy trade; if it breaks below the range low, it opens a sell trade.