||It has been suggested that MetaQuotes Software be merged into this article. (Discuss) Proposed since February 2012.|
|Developer(s)||Metaquotes Software Corp.|
|Type||Trading platform, Technical analysis software|
|License||Metaquotes Software Corp.|
MetaTrader 4, also known as MT4, is an electronic trading platform widely used by online retail foreign exchange speculative traders. It was developed by MetaQuotes Software and released in 2005. The software is licensed to foreign exchange brokers who provide the software to their clients. The software consists of both a client and server component. The server component is run by the broker and the client software is provided to the broker’s customers, who use it to see live streaming prices and charts, to place orders, and to manage their accounts.
The client is a Microsoft Windows-based application that became popular mainly due to the ability for end users to write their own trading scripts and robots that could automate trading. In 2010 MetaQuotes released a successor, MetaTrader 5, however uptake was slow and as of April 2013 most brokers still used MT4. While there is no official MetaTrader 4 version available for Mac OS, some brokers provide their own custom developed MT4 variants for Mac OS.  
Its developer MetaQuotes Software had previously released a number of versions of the MetaTrader software starting in 2002. Metatrader 4 was a significantly enhanced version and was released in 2005.
Between 2007 and 2010 a number of brokerages added the MT4 platform as an optional alternative to their existing trading software due to its popularity with traders and the large number of third party scripts and advisors.
In 2010 a significantly re-coded MetaTrader 5 went into public beta testing and was subsequently released later in the year. In 2013 and 2014 MQL4 programming language has been completely revised reaching the level of MQL5. Starting from build 600, MQL4 and MQL5 use unified MetaEditor.
The client terminal includes a built-in editor and compiler with access to a user contributed free library of software, articles and help. The software utilizes a proprietary scripting language, MQL4, which enables traders to develop Expert Advisors, custom indicators and scripts. MetaTrader's popularity largely stems from its support of algorithmic trading.
MT4 is designed to be used as a stand alone system with the broker manually managing their position and this is a common configuration used by brokers. However a number of third party developers have written software bridges enabling integration with other financial trading systems for automatic hedging of positions. In late 2012 and early 2013, MetaQuotes Software began to work towards removing third-party plugins for its software from the market, suing and warning developers and brokers.
The complete MetaTrader 4 package includes the following components:
- MetaTrader 4 Client Terminal - the client part. Provided free by brokerages for real-time online trading and as Demo (practice trading) accounts. This provides trade operations, charts and technical analysis in real time. The internal C-like programming language allows users to program trading strategies, indicators and signals. 50 basic indicators are included, each of which can be further customized. The software runs on Windows 98/2000/XP/Vista/7. Some users have reported success using Wine on Linux for the client terminal and on Mac using WineBottler.
- MetaTrader 4 Mobile - controls a trading account via mobile devices such as mobile phones or PDAs. Runs on Windows Pocket PC 2002/Mobile 2003. Newly released mobile versions also run on the iPhone, iPad, and Android devices.
- MetaTrader 4 Server - the core of the system, the server part. Designed to handle user requests to perform trade operations, display and execution of warrants. Also, sends price quotes and news broadcasts, records and maintains archives. Works as a service. Does not have a separate interface.
- MetaTrader 4 Administrator - is designed to remotely manage the server settings.
- MetaTrader 4 Manager - designed to handle trade inquiries and manage customer accounts.
- MetaTrader 4 Data Center - a specialized proxy server and can be an intermediary between the server and client terminals. It reduces the price quote sending load on the main server.
The platform is focused on margin trading. Some brokerages use the platform to trade CFD but it is not designed for full-time work in the stock market or to conduct non margined trading.
MetaTrader 5 is designed as a platform for equity markets as well as foreign exchange, CFD and futures trading.
Both MetaTrader 4 and 5 can use custom indicators and trading programs (called Expert Advisors) for trading automation.
- "XEMarkets Launches XEM MT4 for Mac Operating System". Forex Broker News. April 10, 2013. Retrieved April 11, 2013.
- "Running MetaTrader on a Mac". Metatrader Programming. March 17, 2012. Retrieved March 17, 2014.
- "Full list of brokers with native Mac MT4 versions". Metatrader 4 mac. October 12, 2014. Retrieved October 13, 2014.
- "What's New in MQL4". MetaQuotes Software. May 17, 2014.
- "MQL4 Documentation". Metaqoutes Software. Retrieved June 15, 2011.
- "Yahoo Groups - MetaTrader_Experts_and_Indicators". Yahoo. Retrieved June 15, 2011.
- "Google search - MT4 Bridges". Google. Retrieved June 17, 2011.
- "MetaQuotes Warns Brokers About Illegal Plugins". Forex Magnates. March 22, 2013. Retrieved April 11, 2013.
- Jafar Calley (17 June 2010). "Installing Metatrader 4 Forex Charts Under Linux". AboutCurrency.com.
- "Installing Metatrader on Mac". Metatradermac.info. 16 April 2013.