Software Packages

• OnixS FIX Engine with easy and flexible DotNET API 
  

 NexTic****NexTick is an open source software solution for stock traders [day and swing traders]. The primarily focus of the NexTick is simplicity and usability, while other trading platforms focus on variety of features for highly professional traders, we've only added the most commonly used features. Again, our focus is usability and simplicity. 

• the gathering of raw data over the internet

• the recognition of trading signals

• a visualisation module and modules to connect to the programmatic interfaces of trading platforms like banks.

• Includes 200 indicators such as ADX, MACD, RSI, Stochastic, Bollinger Bands etc… (more info)

• Candlestick pattern recognition

• Open-source API for C/C++, Java, Perl, Python and 100% Managed .NET

• Realtime Quotes

• Intraday Charts

• History Charts

• Technical Analisys Indicators

• Price Patterns Detection

• Financial News

• Level II (Book) Market Data

• Trading Accounts Management

• Integrated Trading 

  ChartsyFree stock charting screening and trading platformhttp://www.chartsy.org/  
Matrexhttp://matrex.sourceforge.net/index.shtmlMatrex is a vectorial spreadsheet. It gives you the same functionalities of a classic spreadsheet application in a new, different way. Matrex is excellent when working with blocks of data coming from databases, feeds, files, external applications, simulations. 

  Open Java Trading System (abandonware)****http://ojts.sourceforge.net/The Open Java Trading System (OJTS) is meant to be a common infrastructure to develop stock trading systems. It consists of four parts: 
 Robotrader**Robotrader is a simulation platform for automated stock exchange trading. It delivers statistics to analyse performance on historic data and allows comparison between trading strategies, that can be coded in Java. Version 0.2.7 of robotrader includes: Complete simulation platform with a graphical user interface, many sample trading strategies implemented, Yahoo quotes downloading, more statistics, more technical indicators.  TA-Lib: Technical Analysis Library** TA-Lib is widely used by trading software developers requiring to perform technical analysis of financial market data.
Free Open-Source Library_TA-Lib is available under a BSD License allowing it to be integrated in your own open-source or commercial application. (more info) Commercial Application_TA-Lib is also available as an easy to install Excel Add-Ins.  Eclipse Trader****EclipseTrader is an Eclipse Rich Client Platform (RCP) application focused to the building of an online stock trading system, featuring shares pricing watch, intraday and history charts with technical analysis indicators, level II/market depth view, news watching, and integrated trading. The standard Eclipse RCP plug-ins architecture allows third-party vendors to extend the functionality of the program to include custom indicators, views or access to subscription-based data feeds and order entry. Features