High Performance Inter-Thread Messaging Library
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
Numpy main repository
Python library to download market data via Bloomberg, Quandl, Yahoo etc.
Zipline, a Pythonic Algorithmic Trading Library
Open-Source Subscription Billing & Payment Platform
Scipy library main repository
Open source analytics and market risk library from OpenGamma
QuickFIX C++ Fix Engine Library
The most popular Ethereum development framework
Easy to use Python API wrapper to plot charts with matplotlib, plotly, bokeh and more
IPython widgets for the Jupyter Notebook
Portfolio and risk analytics in Python
Common financial risk and performance metrics. Used by zipline and pyfolio.
The QuantLib C++ library
Cython QuantLib wrappers
The 21 command line interface and two1 bitcoin library. Send and receive BTC over HTTP.
SImple, common-sense Bitcoin-themed Python ECC library
A community based Python library for quantitative economics
Python library for backtesting trading strategies & analyzing financial markets (formerly pythalesians)
Basic Development Environment - a set of foundational C++ libraries used at Bloomberg.
A framework agnostic, multi-gateway payment processing library for PHP 5.3+
Python Algorithmic Trading Library
An SVG webfont full of main payment system icons