MT4 / MQ4
Indicator
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Indicator
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ADX Fibo MA Indicator
ADX Fibo MA Indicator is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, ADX, Trailing Stop, 8 exposed input declarations, and…
Free MQL4 and MQL5 Source Code Downloads
Browse free MQL source code for MetaTrader 4 and MetaTrader 5 through the B123 Quant library. The collections separate Expert Advisors from indicators and general download intent from editable MQ4 or MQ5 source-code intent, so traders can reach the most relevant platform and resource type quickly.
Source-code analysis only. No backtest or live-performance claim is provided.
Free MetaTrader source libraries
Use the general download collections to compare available resources, installation steps, platform compatibility, account access, and private delivery. Use the source-code collections when you want editable files, detected inputs, event handlers, dependencies, diagnostic status, and code-specific risk notes.
- Free MT4 EA downloads for MetaTrader 4 Expert Advisor discovery and installation.
- Free MT5 EA downloads for MetaTrader 5 Expert Advisor discovery and installation.
- Free MT4 indicator downloads for editable MT4 indicator resources.
- Free MT5 indicator downloads for MetaTrader 5 indicator resources.
- Free MT4 EA source code with MQ4 structure and diagnostic evidence.
- Free MT5 EA source code with MQ5 structure and diagnostic evidence.
- Free MT4 indicator source code with buffers, inputs, and dependency notes.
- Free MT5 indicator source code with MQ5 event and plot analysis.
How resources qualify for the public library
Original files remain immutable. A published derivative is created separately, non-runtime author URLs and contact details are replaced with the B123 site URL, and functional WebRequest or runtime API endpoints are preserved when changing them would alter behavior. Exact duplicates consolidate into one canonical family rather than creating repeated search pages.
Diagnostic status is shown so users know what may need work. A source can be marked compile passed, compile failed, dependency missing, legacy source, or compile not run. Compilation confirms only syntax and available dependencies in one isolated environment; it never proves trading performance or live-account suitability.
What each product page documents
Each family page identifies the platform, resource type, source format, detected handlers and components, exposed inputs, dependencies, sanitization status, compilation result, installation workflow, and operational risks supported by static evidence. Pages do not invent profit, drawdown, win rate, broker, symbol, timeframe, prop-firm, or non-repainting claims.
Private download access
Product pages and collection pages are public, while source packages use registered WooCommerce accounts and private download permissions. Each account may claim three distinct free-source products per site day. Each granted permission allows three download attempts and expires after 30 days. Raw ZIP paths, account pages, and private delivery endpoints are not search landing pages.
Need a ready-to-use EA instead of source code?
Free source is useful for study and testing, but it may require compilation, missing includes, syntax changes, broker-specific setup, or risk review. Traders who do not want to edit code can compare paid BBTrading products with clearer setup notes, private delivery, and available backtest evidence. Paid products are separate from this free library and should be evaluated on their own product evidence and risk notes.
Want this source checked or fixed?
If a file does not compile or you are unsure how to install it, use the diagnostic label and dependency list when contacting B123. A support conversation can identify whether the problem is a missing include, old MQL syntax, platform mismatch, or configuration issue. No repair or live-trading outcome is guaranteed.
Questions
Are these MQL files free to download?
Yes. A registered account is required so WooCommerce can grant a private zero-total order permission and enforce the daily quota.
Does a compile pass mean an EA is profitable?
No. Compilation checks code and dependencies only. It is not a backtest, live result, or profitability verification.
Why might a source file fail to compile?
Common causes include missing MQH dependencies, old language syntax, unavailable custom indicators, or differences between MetaEditor builds. The product page shows the known diagnostic status before download.
Can the source code be modified?
The downloadable MQ4 and MQ5 derivatives are editable, but every modification requires independent review, compilation, and demo testing.
Are functional API addresses removed?
No. Detected runtime endpoints are preserved when replacement could break WebRequest, licensing, news, or other executable network behavior.
Free MQL Source Code Library
Browse free MQ4, MQ5, and MQL source downloads
Use the library to find free MetaTrader source-code pages with diagnostic labels, account-based private delivery, and paths to ready-to-use BBTrading products.
4,415 live resources
2,751 MT4 / MQ4
1,664 MT5 / MQ5
2,751 MT4 / MQ4
1,664 MT5 / MQ5
916 matching source pages
Claim limit: 3 distinct free resources per account day
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MT4 / MQ4
Indicator
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Indicator
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VininI HMA sound Alert
VininI HMA sound Alert is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 8 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Indicator
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Indicator
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3 MA Cross w Alert v2
3 MA Cross w Alert v2 is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 10 exposed input declarations, and 0…
MT4 / MQ4
Indicator
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Indicator
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FN Signal
FN Signal is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 4 exposed input declarations, and 0 include dependencies.Source-code analysis only….
MT4 / MQ4
Indicator
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Indicator
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MA Support
MA Support is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 11 exposed input declarations, and 0 include dependencies.Source-code analysis only….
MT4 / MQ4
Indicator
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Indicator
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Elliot Waves Oscillator
Elliot Waves Oscillator is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Trend, 14 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Indicator
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Indicator
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Bunnygirl Cross and Daily Open
Bunnygirl Cross and Daily Open is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Custom Indicator, 3 exposed input declarations, and…
MT4 / MQ4
Indicator
Compile not run
Indicator
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Heiken Ashi 2xcci MA Swing Mtf
Heiken Ashi 2xcci MA Swing Mtf is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, ATR, CCI, 16 exposed input declarations,…
MT4 / MQ4
Indicator
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Indicator
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Awesome Signal
Awesome Signal is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 4 exposed input declarations, and 0 include dependencies.Source-code analysis only….
MT4 / MQ4
Indicator
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Indicator
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Vr Multi Timeframe MA
Vr Multi Timeframe MA is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 41 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Indicator
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Indicator
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Table v0
Table v0 is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, RSI, CCI, 16 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Indicator
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Indicator
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dTrends
dTrends is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Trend, 7 exposed input declarations, and 0 include dependencies.Source-code analysis only….
MT4 / MQ4
Indicator
Missing dependencies
Indicator
Missing dependencies
1 Spread Hi Lo
1 Spread Hi Lo is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Trend, 20 exposed input declarations, and 1 include…
MT4 / MQ4
Indicator
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Indicator
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Slope Direction Line Alert
Slope Direction Line Alert is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Trend, 5 exposed input declarations, and 0 include…
MT4 / MQ4
Indicator
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Indicator
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Brooky USD Strength
Brooky USD Strength is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, Custom Indicator, 17 exposed input declarations, and 0 include…
MT4 / MQ4
Indicator
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Indicator
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M A C H X alert
M A C H X alert is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 5 exposed input declarations, and 0…
MT4 / MQ4
Indicator
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Indicator
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RSI MA Trade Sist Chart
RSI MA Trade Sist Chart is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, RSI, ATR, 10 exposed input declarations, and…
MT4 / MQ4
Indicator
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Indicator
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Combined MA Signal
Combined MA Signal is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 4 exposed input declarations, and 0 include dependencies.Source-code analysis…
MT4 / MQ4
Indicator
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Indicator
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Turn Area Alert
Turn Area Alert is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, RSI, 13 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Indicator
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Indicator
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MA Hector v2 XY
MA Hector v2 XY is a MetaTrader 4 Indicator source file. Static analysis documents Moving Average, 2 exposed input declarations, and 0 include dependencies.Source-code…
MT4 / MQ4
Expert Advisor
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Expert Advisor
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Universal Investor
Universal Investor is a MetaTrader 4 Expert Advisor source file. Static analysis documents Moving Average, Risk or Lot Sizing, 4 exposed input declarations, and…
MT4 / MQ4
Expert Advisor
Missing dependencies
Expert Advisor
Missing dependencies
JS ma paraboliks Trades
JS ma paraboliks Trades is a MetaTrader 4 Expert Advisor source file. Static analysis documents Moving Average, Parabolic SAR, Trend, 10 exposed input declarations,…
MT4 / MQ4
Expert Advisor
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Expert Advisor
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V5 MA MACD
V5 MA MACD is a MetaTrader 4 Expert Advisor source file. Static analysis documents Moving Average, MACD, 2 exposed input declarations, and 0 include…
MT4 / MQ4
Expert Advisor
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Expert Advisor
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up3x1 Premium 2vM
up3x1 Premium 2vM is a MetaTrader 4 Expert Advisor source file. Static analysis documents Moving Average, Trailing Stop, 6 exposed input declarations, and 0…