MetaTrader 4 became the retail forex industry standard in 2005 and stayed there for the better part of two decades through sheer ecosystem inertia. MetaQuotes — the company that built it — formally deprecated MT4 downloads from its own website in 2022, redirecting new traders to MT5. The retail brokers ignored that pivot. As of January 2026, every major retail forex/CFD broker still runs production MT4 servers, still maintains the platform on broker-branded download portals, and still treats MT4 as the default for incoming retail clients on automated-strategy mandates. The ecosystem reasoning is straightforward: thousands of expert advisors written in MQL4 since 2005 do not migrate to MT5 cleanly, the MT4 marketplace contains custom indicators and scripts the MT5 marketplace cannot match for retail forex/CFD use cases, and the MT4 mobile app, while dated, is what serious algorithmic retail traders have built workflow muscle memory around.
Broker choice for MT4 traders is therefore consequential in ways that broker choice for traders on broker-proprietary platforms is not. The MT4 client connects to a specific broker's MT4 server; that server's geographic colocation, latency under load, EA hosting policy, scalping permissibility during news events, and spread quality on MT4 (which can differ meaningfully from the same broker's spread on cTrader or proprietary platforms) all directly shape the trading experience. A broker that runs MT4 on a generic cloud instance with 200-millisecond round-trip latency to your home connection is not the same broker as one running Equinix-colocated MT4 with sub-50-millisecond latency to a paid VPS in the same data centre — even if the marketing pages quote identical headline spreads.
The six brokers below are the ones whose MT4 implementations we judged most likely to give a serious algorithmic or scalping trader the operational reliability and pricing the strategy needs.