Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
Portfolio and risk analytics in Python
Open Source Billing a super simple way to create and send invoices and receive payments online.
Open-Source Subscription Billing & Payment Platform
Python module to get stock data from Yahoo! Finance
Numpy main repository
Python library to download market data via Bloomberg, Quandl, Yahoo etc.
The QuantLib C++ library
QuickFIX C++ Fix Engine Library
The most popular Ethereum development framework
Scipy library main repository
Python library for backtesting trading strategies & analyzing financial markets (formerly pythalesians)
Interactive widgets for the Jupyter Notebook
Python Algorithmic Trading Library
Common financial risk and performance metrics. Used by zipline and pyfolio.
iOS's Stocks App clone written in React Native for demo purpose (available both iOS and Android).
A framework agnostic, multi-gateway payment processing library for PHP 5.3+
High Performance Inter-Thread Messaging Library
Zipline, a Pythonic Algorithmic Trading Library
Open source analytics and market risk library from OpenGamma
Basic Development Environment - a set of foundational C++ libraries used at Bloomberg.
A community based Python library for quantitative economics
Easy to use Python API wrapper to plot charts with matplotlib, plotly, bokeh and more
Cython QuantLib wrappers