GBonds is a savings bond inventory program for GNOME. It allows you to track the current redemption value and performance of your U.S. Savings Bonds and keep a valuable record of the bonds you own. Gbonds is similar in functionality to "Savings Bond Wizard" for Windows distributed by the U.S. Treasury.
GnuCash allows you to track bank accounts, stocks, income, and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports. It is backed by an active development community and is blossoming into a full-fledged accounting system.
RAPID provides stock/commodity charts, buy/sell tax accounting and trade profit graphing, plus dozens of technical analysis tools, including trendlines, point and figure, candlesticks, simple exponential and weighted moving averages, volatility, macd, stochastics, wilder DMI, standard deviation bands, trendlines, time-horizon lines, fibonacci, slope, momentum, OBV, CCI, bollinger bands, probability osc, cycle finder, derivative and integration chart, Williams Accumulation and distribution, etc.
Sgraph is a utility to create graphs from data supplied by the user. It creates standard stock charts, using open/min/max/close and volume data. Another goal is to create a set of functions that can serve as a static library, to interface with your stock data manipulation routines.
PricingNexus is a Java-based framework that collects financial data from the Internet, stores it in a database, and makes it available via JMS/DB/RMI, using a well-defined framework. It relies heavily on JMS for transporting messages and communication, and on XML for the data format. It uses several components working separately in a distributed object environment.
GreatCharts is used for creating good-lookings stock charts. It was mainly developed for stock Web sites, to create on-the-fly charts. Small charts (closing+volume) can be drawn in less than 10ms. It can read different input formats, and can draw up to 20 charts in one PNG with different scales. The supported types are: Closing, OHLC, Volume, and Candlestick. The supported formulas are: Moving, Moving Average, RSI, MACD, and Stochastic. The supported drawing types are: line, filled, bar, and filled bars (filled can be transparant to the background/underlaying plots). Everything is configurable through a config file and parameters, including your own background, sizes, etc.