Free Algorithmic Trading Libs & Links (Oct/2015)
Happy to share high quality algo trading links, please send me here.

Link Description
Eclipsetrader source trading system based on eclipse
JQuantLib Source Library in Java
Mayguard source evaluation of financial products in JAVA
Pandas Library
PyAlgoTrade Free python library for backtesting stock trading strategies.
QuantComponents Algorithmic trading open source framework for Java
QuantConnect source platform for C#
Quantlib open source lib written in C++
Quantmod Modelling for R
Quickfast Source implementation for FAST -> C++, .Net
Quickfix Engine, C++, Python, Ruby
QuickFixJ Open Source Fix Engine

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