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How to Write an Expert Advisor or an Indicator

MQL4 Source Codes of Expert Advisors for MetaTrader 4 - 17

Various applications to automate analysis and trading are available in the 'Expert Advisors' section. It features various applications based on different trading algorithms and provides different degrees of automation. You can find simple EAs and complex trading robots that can fully automate analysis and trading processes.

These applications can be downloaded and run in MetaTrader 4. It is recommended to test and optimize Expert Advisors in the Strategy tester. The Expert Advisors from the library can be accessed from the MetaTrader 4 platform and the MetaEditor development environment.


This expert is based on the Trix indicator created by raff1410

An excellent work for the future. A high profitableness.

EA named "gazonkos" produces small profits, but does it often.

Almost classical TS based on the intersection of two MA.

Who wanted 5 points per day?

This expert advisor is based on the 3MACross indicator.

Lot = 0.2, you can change into 0.1 or set whatever value you want

The EA was developed to test the strategy published at "Kroufr".

A trade system in the Price Channel based on kickback

An EA that demostrates the excellent properties on the H1 with EUR/USD. The MA indicators were used.

The parameters of working - Places two starting pending orders for buying and selling (the size of the lot is calculated automatically on the basis of the deposit size and the maximum increase of leverage from 0.01 to 0.07 lots) taking into account th

A trade strategy that functions with the pattern MACD "head and shoulders"

At Bookkeeper's request, I've made an "egzpert advizor" by the ZigAndZag indicator, published at:

The EA uses 5 indicators.

A universal EA for the long-time, portfolio trading.

A universal template for MTS developing.

Stochastic and RSI | 10K to 25.5K in 3 Months | 3 Lots Maximum

This EA based on indicators: RSI, WPR%, Stochastic, Moving Average, deMarker. Only 15 MIN charts I recommend

10K Flipped to 666K Under 3 Months, 60.04 Profit Factor...Have Fun! Code Pushes 3 Lots(Maximum) at a Time.

A TS based on the kickback from intraday levels calculated by indicator Pivot is implemented.

Sell when Up >>> Buy when Down

Demo it First... $5000 Flipped To $243K in 3 Months. Coders Needed, Not Finished.

The pattern of the MACD trend continuation

TS on the break through of daily resistance/support levels of the Pivot indicator.

A 4-hour MACD FOREX strategy

Previously uploaded Expert Advisor Kloss specially revised for optimization

A primitive Expert Advisor that learns from its own mistakes.

The Expert Advisor demonstrates the possibility to gain profits using the position opening strategy based on the "heads-or-tails" principle.

A simple system without indicators.

Combo of averages and MACD. All parameters are free to be changed.

3 bearish and sequential lengthening bars? Bruins, we are not going your way!

An EA developed on the basis of "Full Dump" system.

The EA works with the 1 min EURUSD AMA signal but can't turn the corner without latent signals. Can somebody try to work the flaw and make the signal more precise. It has some RSI and MA added to filter. But not enough to accomplish a msot profitable tra

The EA unloads historical data in the *.csv format for several timeframes of the symbol it is attached to.

EA up3x1 of the Krohabor_D series with a universal technology of "win-win" trading.

A slightly optimized EA template from article MetaEditor: Templates as a Spot to Stand On

This expert advisor is based on the Volatility Quality Index indicator created by raff1410.

It is a source code by winwin2007 - one of the leaders of the ATC 2007. It works only with the spread 2. It is closed after gaining the minimal profit, that is why Stop Loss and Take Profit levels of a brokerage company are not a problem for it.

The most reliable Expert Advisor. EUR/USD 1H

Trading without indicators!!!