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How to Write an Expert Advisor or an Indicator

MQL4 Source Code Library for MetaTrader 4 - 91


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.

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Indicator Fisher mbk.

The indicator shows points BUY and SELL.

Indicator Custom Aroon Up & Dn.

Draws on the schedule possible behaviour of the price.

Filter AO helps to filter flet.

The indicator showing a maximum and a minimum of pregoing day.

The indicator shows a trend.

Tick indicator Tick on Chart.

The indicator of trading sessions.

The indicator of trading system pabloski.

The indicator shows the forecast for 12 bars forward.

Defines intensity and a direction of a trend.

The indicator draws levels.

The indicator of trading system pabloski.

The indicator showing channels.

Updating of version VIII.

One more version of the digital indicator.

The indicator shows the beginning and the end flet.

One of versions of channel DiNapoli.

Volume with Custom Moving Average.

The alarm indicator 3MA Cross w_Alert v2.

The indicator shows levels of support/resistance.

The indicator which draws a structure of the market.

Shows arrows crossing of two МА.

Shows on a probable trend for a day.

Indicator Schaff Trend Cycle.

Indicator SilverTrend Signal.

Indicator MBKA sctrend 3times.

Indicator Phoenix 4 CONTEST.

Indicator PIPQind.

This Indicator Draws 7 Level Of monthly Fibo With Back Test. Its very power Levels

This Indicator Draws 7 Level Of weekly Fibo With Back Test.

Chaikin Indicator.

Simple FX free expert advisor automatically trades the Forex market using moving averages. The expert advisor comes with user manual and source code. All the expert advisors settings can be changed at anytime.

Risk advisor script based on balance Risk Percent.

Close all multi currency open orders and cancel pending orders according to various scenarios. Slippage for open orders is calculated for each currency. Choose only one scenario per visit, the script processes the first menu item selected.

There are some scripts in the zip archive which could be very usefull in intraday trading. With them you can respond on market changes very quickly.

Graphs correlation between percent change of the price signal, and the price signal, to determine high probability of current price signal direction.

Pivot Point is a turning point for the direction of price movement in a market.

R-Squared indicator.