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How to Write an Expert Advisor or an Indicator

MQL4 Source Code Library for MetaTrader 4 - 57

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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Now combines 14 different indicators and 7 timeframes in an easy to read meter for any FX chart. Includes inbuilt History viewer. Fully configurable signals & indicators.

The adviser allows you to try manual trading on the historical date

Calculates multiple moving averages trend

KDJ indicator

This indicator calculates Figurelli pivot points, that uses Bulls/Bears influence

Indicator mentioned in the book "Nature of trend"

Индикатор показывает возможные границы и направление бара с заглядыванием на один бар вперед.

Kaufman’s Adaptive Moving Average

an oscillator based on 3MAs.

The indicator helps to find Stop Loss levels.

This EA is intended to be less prone to big drawdowns than former RUBBERBANDS EA and RUBBERBANDS_2 EA. Awaiting for your comments and suggestions for improvement.

Color version of the XMA indicator.

Visualizes important psychological levels ("Double-Zeros").

This Expert Advisor uses MACD Logic. It is Working fine. Yes Daily 10 Pips or 10$ you may get. !!! HAPPY TRADING !!!

A volatility indicator, V Speed.

The indicator predicts the future movement of prices.

Combines 9 indicators and 7 timeframes in an easy to read meter in bottom right corner, which can be used on any FX chart or timeframe.

Waddah Attar Scalping indicator Shows you quick Trend.

The REI (Range Expansion Index) indicator by Thomas DeMark.

This EA is an enhanced version of the original RUBBERBANDS EA. Just like the oroginal RUBBERBANDS EA, it works in any timeframe for any currency pair, including gold and silver.

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)