QuantLib is a cross-platform, quantitative finance C++ library for modeling, pricing, trading, and risk management in real-life. It is also wrapped as Python/Ruby/Scheme modules. Extensions for Excel, R, and Mathematica are available. Other such extensions are under consideration. QuantLib offers tools that are useful both for practical implementation and for advanced modeling. It features market conventions, yield curve models, solvers, PDEs, Monte Carlo (low-discrepancy included), exotic options, VAR, and so on.
AIOTrade (i.e. Humai Trader Platform) is a stock technical analysis platform with a pluggable architecture that is ideal for extensions such as indicators and charts. It supports parallel quote data retrieval from Yahoo! or ASCII text files, historical (daily, weekly, and monthly), intra-day, and real-time charts, and candle, bar, and line charts. It has a calendar date/trading date view model. "MACD", "OBV", "ROC", "KD", "BIAS", "DMI", "RSI", "MTM", and "WMS" indicators and drawing of "Line", "Parallel", "Gann Angle", and "Fibonacci Line" are supported. You can easily write your own indicators.
PortfolioTracker allows you to track and manage your stock portfolio of Euronext shares in real time (with a 15 second delay). You can use it to assess your stock positions (price, daychange, gain, gain%, value, weight%) with one command. Portfolio changes are easily maintained in a text file. PortfolioTracker is a twin project of QuotesViewer (http://quotesviewer.sourceforge.net).
The TREE Data Server captures real-time financial data from one or several data feed services (e.g. IB TWS API), archives data in a historical database, and makes both live and archived data available to client applications. The system can be used in real-time charting, an ATS, a tick feed simulator, or any situation in which multiple clients need real-time access to the tick stream or archived tick data. In addition, the archived tick stream and tick data are available for offline data analysis and backtesting.