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TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app...

Fast calculator is fast and simple calculator with many functions on java.

Smart Calculator is beautifully designed, having both standard and scientific modes of calculations. It is built to run anywhere, as its written completely in Java. It featured different types of Look and Feels, using Java's Swing PLAF library.

Enable the user to talk to the calculator to enter the numbers and operations or write them using a drawing panel , it support both English and Arabic languages.It have text to speech of the entered numbers/operations and reading the results.

This is a Reverse Polish Notation (RPN) Fraction Calculator. It works like any other RPN calculator, except that it operates on fractions instead of decimal numbers. Decimal number entries are not permitted. Whole numbers are permitted.

Can calculate mathematical expression. It have a module system witch make it very easy to add own functions. Other features are a graph painter and a tiny programming language designed too make it easy too write small mathematical tools.