string array suite
description:this suite of functions is designed to manage two-dimensional string arrays, offering a practical solution for prototyping.notes: this is revision 1, building upon the ...
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MetaTrader MT4 Library Source Code Downloads
Browse free MetaTrader MT4 Library source code downloads including ready-to-use trading tools, algorithmic strategies, and MQL programming resources. This section is designed for traders and developers looking to study, modify, or build custom automated trading systems for MetaTrader 4 and MetaTrader 5.
All Library listings include downloadable source code, allowing you to analyze how each trading system works internally and adapt it to your own trading strategy. These tools are used for education, strategy development, and algorithmic trading research.
Whether you are building Expert Advisors, custom indicators, scripts, or reusable MQL libraries, this collection provides structured access to MetaTrader 4 development resources used by retail traders and algorithmic developers worldwide.
orders suite
a comprehensive library of functions designed for efficient order processing of spot currency pairs, spot gold, and spot silver.this suite includes robust error handling mechanisms...
time suite
a comprehensive library of functions designed for efficient time calculations and report scheduling.this suite offers a range of tools to streamline time-related tasks, ensuring ac...
standard library
this is a source file for the standard library, providing an example of a library implementation.the library offers a collection of functions and classes to facilitate various task...
zeromq asynchronous communication
zeromq is a socket library that acts as a concurrency framework. it carries messages across inproc, ipc, tcp, and multicast and connects n-to-n via fanout, pubsub, pipeline, reques...
native mq http client
description: it does not require any external dlls apart from the standard wininet shipped with win32 in 2026.additionally, it provides some file upload ability.place this in the e...
Automated MT4/MT5 Backtester Control
Automated Backtesting Control UtilityThis utility is designed to automate the backtesting process for MetaTrader Expert Advisors (EAs).The goal is to streamline the procedure of ru...
BB MA C D Functions
In this library, you'll find two functions: ibandsfunc and imacdfunc. These functions enhance the calculation capabilities of their respective indicators, making them suitable for ...
Custom Functions: iacfunc, iaofunc, and ibearsbullsfuncs
This library introduces three custom functions: iacfunc, iaofunc, and ibearsbullsfuncs. These functions enhance the calculation capabilities of their standard counterparts and are ...
Real-Time Excel Export
This script utilizes the DDE library provided by Windows, simplifying the process for novice coders.DDE functions as follows:- Initialize DDE- Create a string handle for the Excel ...
AlgLib: Numerical Analysis Library for MetaTrader
AlgLib: Numerical Analysis LibraryThis library provides functions for numerical analysis, including the calculation of distribution moments such as mean, variance, skewness, and ku...
Simple Unit Test Include Library for MQL4
A straightforward and cost-effective unit test include library designed for MQL4.Usage Instructions:Refer to the attached sample file: testexpert.mq4.The results of unittest#prints...
mt4r for MQL4: A Compatibility Update
mt4r, originally developed by Bernd Kreuss and distributed elsewhere, does not function correctly with new MQL4 versions.This package provides modified DLLs and include files to en...
MQL4 MySQL Connector for Builds 600+
MQL4 MySQL Connector for Builds 600+This library enables MQL4 (MetaTrader 4) to connect to MySQL databases. It addresses the string format changes introduced in MetaTrader 4 build ...
Efficient Hash Map Implementation for String-to-Object Mapping
This is a hash map implementation that allows string indexes, similar to arrays. It maps strings to objects, where the objects must be a subclass of the provided HashValue class.By...
MQL4 HTTP Requests using WinINet.dll (MT4 Build 600+)
This is a simple MQL4 wrapper that uses the native Windows WinINet.dll library. It allows you to send HTTP GET requests to a remote destination and read the response body. This too...
MQL4 JSON Parser Library
MQL4 JSON ParserThis tool parses MQL4 strings containing JSON code, creating a `jsonvalue` object that allows retrieval of fields within the JSON structure. It also includes a `jso...
Script Calling Library for MT4 Build 600 and Later
This is a script calling library for MT4 build 600 and later.This library is for calling scripts from your indicator and expert advisors.On earlier builds of MT4, this can be achie...
G-Speak DLL Update for MT4 Build 600+
G-Speak DLL Update for MT4 Build 600+
This update addresses an issue with the G-Speak DLL, which enables text-to-speech alerts using the Windows TTS engine, for MetaTrader 4 build...
Skype Control Library for MetaTrader
This library allows for sending text messages with necessary information via Skype in automatic trading. It works with Skype through the skype4com library, an ActiveX component tha...
Time Filter for Trading Positions
This library provides a function to filter trading positions based on a specified time range.If the current time falls within the set interval, the function returns true, allowing ...
Convert Time to Double and Vice Versa
These functions are handy for passing datetime through global variables.Example:You can use it to save a value and retrieve it later....
log4mql
log4mql is an MQL4 (MetaQuotes MetaTrader 4 Language) library designed for flexible logging to files and the terminal console. It is inspired by the log4j Java library.Documentatio...
MySQL Library for MQL4 with Enhanced Memory Management
The original mql4-mysql.mqh library had critical memory management issues, causing crashes and instability. After thorough code analysis, the root cause was identified within the f...
Orders Manager Class
This is a straightforward yet effective class for managing orders.While it could benefit from improved handling of magic numbers, this version serves as a starting point.Usage:...
Fuzzy - A Library for Developing Fuzzy Models
This library provides a comprehensive set of tools for creating and implementing fuzzy models in your applications.The library includes:- 5 core components.- A flexible framework f...
MT4 Account Authentication from MQL4
This library simplifies the process of programmatically filling values in the MT4 login dialog, which became more challenging after the release of build 880.It provides an easy-to-...
Time-Based Operation Control for MQL Programs
This function enables the execution of specific code within defined time intervals. It is commonly utilized in Expert Advisors (EAs) to restrict trading activities to authorized pe...
Close All Locked Orders
This function closes all locked orders.This can significantly reduce trading costs by eliminating spread expenses on locked positions.Functionality- Closes all pending orders.- Clo...
Lot Size Calculation Based on Stop Loss and Risk Percentage
This function calculates the appropriate lot size for a trade based on a specified stop loss distance and a risk percentage of the trading account balance.The calculation ensures t...
Font Library for MetaTrader
This library provides a selection of 208 fonts for use within MetaTrader applications.Fonts can be chosen via a drop-down list.To apply a specific font in your code, refer to the p...
INI File Management Library for MT4/MT5
A comprehensive library of functions for managing INI files within MetaTrader platforms (MT4/MT5).This library provides essential tools for both reading from and writing to INI con...
Universal Trailing Stop Library for MetaTrader Expert Advisors
This library provides the functionality to implement a simple trailing stop mechanism for any Expert Advisor (EA) in MetaTrader 4/5.The library is designed for universal applicatio...
Comment2 Library for Enhanced Chart Text Output
The Comment2 library enhances the standard comment functionality in MetaTrader 4, enabling precise placement of text comments on specified chart lines. This feature is invaluable f...
Time Manipulation Library for MetaTrader
A collection of utility functions for handling time and date calculations within MetaTrader 4/5 environments.Key Functions:- Last Sunday Before DT: Returns the last Sunday at 22:00...
Writing Quotes to a TXT File with Full Path and Filename
Function Description:This function writes quote data to a specified text file, overwriting its content if the file already exists. The filename will be the currency symbol, and the...
Automated Optimization Library for MT4/MT5
Detailed information on the usage and operational principles of the automated optimization library is available via the provided link.To integrate this library into your Expert Adv...
Function Library and Experts for Trailing
A comprehensive library of functions and expert advisors designed for trailing stop functionality within the MetaTrader environment.This tool adheres to standard MT4/MT5 convention...
Currency Symbol Lister
This utility function generates a comprehensive list of currency pair symbols.It iterates through a predefined array of currency abbreviations to create all possible trading pair c...
Lot Size Calculator
This function calculates your lot size based on defined conditions specified in the input variables.The inputs determine the lot size calculation.Key Features- Automatic lot size c...
Break Even and Trailing Stop Functions
This library includes two essential functions for trade management: Break Even and Trailing Stop.Break Even Function:The Break Even function automatically adjusts the stop loss to ...
Count Buy and Sell Positions
This library provides two functions.
The first function counts open BUY positions.
The second function counts open SELL positions....
Automated Lot Size Calculator
This tool calculates the appropriate lot size for trades based on a user-defined risk percentage. Ensure your risk management strategy is clearly defined before using this feature....
Smart Trailing Stop Expert Advisor
This library provides a smart trailing stop function that operates based on the previous candle's data.Example:The system first verifies if a new candle has formed. For buying posi...
Simplified Stop Loss Calculation for Market Execution Orders
This library simplifies the calculation of stop loss for market execution orders.The library allows you to set your stop loss in points.Alternatively, you can enable ATR calculatio...
Hidden Stop Loss and Take Profit for MetaTrader 4/5
This utility provides a method for advanced traders to manage stop loss and take profit levels without explicitly setting them on the trade.
Some brokers, particularly market make...
Standard Functions for Year 1 Timeframe
Set of standard functions for the Year 1 timeframe.1. Number of bars in the Year 1 timeframe.int ibars_yr1 (string exchange); ibarsyr (currency pair).2. Number of bar by time in th...
Period Bars High/Low Library for MetaTrader
This is a library named 'Period Bars High/Low'. It is designed to support traders by providing reliable functionality within the MetaTrader environment.The tool follows standard MT...
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