Queuing Model Excel 

Calculate the optimum number of customer service points (staff) to minimize costs for your business. Identify the impact of changes in service staff, the number of customers waiting, their average waiting time, and service point (staff) utilization.
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Tradetrek Enterprise 

Offers investors a complete set of stock analysis and trading strategy tools, including Live Stock Picks, Neural-Network 5-day forecast, Money Flow, Tick Chart, portfolio and risk management, Pairtrade Picks and real-time interactive charting.
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Calc98 

Scientific engineering statistical and financial calculator, with conversions, constants and physical property data, a built-in periodic table of the elements, stopwatch, number base conversions, vectors, matrices and complex numbers.
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MoneyToys - Discounted Cash Flows applet 

The MoneyToys - Discounted Cash Flows Calculator applet is designed to provide webmasters with a simple way to add instant interactivity to a web site by providing users with a financial calculator applet which is easily added to a web site.
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ProxyDesigner 

ProxyDesigner is a free PC-based UML software design tool that allows software developers to graphically create complex software designs, patterns, and architectures that can be shared with other developers on-line.
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