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How to Write an Expert Advisor or an Indicator

MQL4 Source Code Library for MetaTrader 4 - 64


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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This Moving Average indicator has digital filter to detect trend and flat states of the market.

This Indicators Show You most of Support and Resistance Levels on your Chart .

With this EA, you can make any combination with indicators, you chose what do you want and make your own strategy

After wrote many EAs of many strategies, I think maybe this one has more potential, I post it here to you for testing and verifing, wish you can find and reply bugs or improvements.

Предсказание цен пересечения графика CCI с заданным уровнем FindCCI.

This EA works in any timeframe for any currency pair, including gold & silver.

The indicator shows trade signals.

This version of eFibo trader includes additional trend detection signals based on simple indicators (RSI and MA).

Индикатор по стратегии "Вилка Чувашова".

Модифицированный индикатор Fibonacci Pivots. Теперь уровни отображаются на истории и подписаны значения.

The original cluster CC and CCFP indicators by Simeon Semenych and can be found on from and this artical also descripted how to use the cluster indicator. This updated version has features below: 1) the indicator refeshed

Indicator works with "ModeMA=0" - SMA and "ModeMA=1" - EMA.

Script for calculation average daily range for last agoYear-"calendar" years, last agoMonth - calendar months, ......

Pinball machine

Signal indicator based on MACD

this EA Depends on Moving Average Indicator

Working with RSI on Daily chart. Has StopLoss, TakeProffit and trailing stop.

This indicator for draw an Arrows for buy & sell, it's Depends on FIBO S Indicator

This indicator To show the numerical values of RSI (Open , Close , High , Low)


Colorfull T3 MA

MACD (настройки по умолчанию - АО Вильямса) с сигналами импульса от пересечений разнопериодных RSI / направления Стохастика.

Based on RSX multiple timeframes for EURUSD

Heiken Ashi Real

Отображение точек пересечения RSI различных периодов.

The indicator of the visual and sound control of speed and size coming tick.

The astrological indicator. Marks of the zodiac. The current mark.

this is ordersend management expert advisor script.

It shows the speed of the trend on the current, closest larger and the next TF.

Two scripts to automate opening multiple positions simultainiously with SL and TP.

Lighty edited RVI Indicator.If drawing bug please recompile(Make normal drawing). Currently version SRVI@1 and SRVI@2.

easily shows trend or range

Для анализа японских свечей

MACD lines and histogram for the Impulse trading system.

Drag & Drop the script at chart on point where StopLoss should stay. Script will compare desired StopLoss with the current price and determine the type of the order - Buy or Sell. The next step is calculating the volume according Free Margin and the Risk




shows entry price lines. this is based on "inside bar".

The indicator shows candles of the grown-ups TF.