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Access the CodeBase from your MetaTrader 5 terminal
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How to Write an Expert Advisor or an Indicator

MQL4 Source Code Library for MetaTrader 4 - 88


The largest library features codes of free trading Expert Advisors, technical indicators and scripts. With the available applications you can trade in automated mode and analyze price dynamics. Use the library of codes to learn more about financial market sentiments.

Download free applications, test them and run in your MetaTrader 4. You can access them from the MetaTrader 4 platform and the MetaEditor development environment.

Submit your code

SI indicator.

Strategy pabloski, is realized in indicator StepRSI_v5.2.

StepChoppy_v2 indicator. Uses indicators: StepMA_v7, StepRSI_v5.2.

The indicator-informer Currency prints and writes into a file the following information.

A simple multi-frame indicator on the basis of JMASlope for the organization of scalping and swing trading, as well as for an easier detection of Elliot Waves.

This indicator is alternative of moving averages, but with lower lag and adjustable sensitivity coefficient.

A multi-timeframe indicator. It shows the trend direction of several time charts in a separate window.

The library helps to organize calculations of Max, Min, universal mean, standard deviation, skew, kurtosis, and Z-score, on the data array.

The indicator Acceleration&Speed shows speed and acceleration of a price change.

The standard Awesome with some amendments: signal line, setup of quick, slow, signal line, shifting of the signal line.

Shows the full symbol name on a chart.

Bars of almost equal volumes are formed.

The indicator shows a trend.

#MTF Center of Gravity indicator.

DeMark Trendline Trader indicator.

This indicator places semaphore points on the maximum and minimum of a higher, medium and lower period. Similar to Advanced Get, but without waves numeration.

Indicator RSI DeMarker Super Position

Impulse MACD. The method of its construction is not traditional. This indicator is the result of laziness and absence of a working area on a chart.

Another version.

For those who prefer "slope trading" or other variants that imply using 3 screens. To avoid numerous screens, set up SlopeDirection MTF on a higher timeframe as you desire.

One more indicator form the series of Super Positions: StochR% Super Position

Indicator Metro

Math-System indicator.

Advisor Probe.

Advisor Nextbar.

Advisor Silver Trend v3. Opens one transaction.

Advisor ichimok2005. Uses indicator Ichimoku.

Indicator Tunnel

Indicator iDCG ModStDev.

Indicator CCM3

Indicator All usd pair.

Indicator Trend_CF.

Indiactor Par Test.

Indicator iDCG Camarilla.

Indicator Trendscalpindic.

Indicator SinTrend


Indicator AV

Indicator AFStar

Indiactor 4PMA

Indicator Arbitraz