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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.
Calx is a calculator program based on RPN (Reverse-Polish Notation) that allows you to compute complex mathematical expressions containing brackets, mathematical functions etc.
Wurp is an RPN (Reverse Polish Notation) calculator, similar to the HP48 calculator. Wurp supports various platforms, including KDE and curses (and hopefully Windows eventually).
REPCAL (REverse Polish CALculator) is a light and fast calculator in RPN (reverse polish notation) mode for the console (command line). It is written in 180 lines of Python code, and can be used both interactively or inside shell scripts.
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Bossa is a workflow engine written in Java. The engine is very fast
and lightweight, uses a very expressive Petri net notation to define
workflows, does not requires a RDBMS and is very simple to use and to
integrate with java applications.
Baculator is a Reverse Polish Notation (RPN) calculator program with an infinite scrollable stack and support for most common mathematical operations as well as some more esoteric operations. Available for Unix/Gtk+, Mac OS X, and MS Windows.
KPNClac is a polish notation calculator intended to inspired by the HP48 Series calculators. It handles complex numbers and will someday handle matricies. The next current development version allows user programmable functions via python.
ghsiloP is a GNOME/GTK+ compliant inverse Polish notation calculator written in C++ with GTK--. It has most of the more common scientific calculator features, with more to be added... If you have an HP 48GX (like I do) or similar calculator, you'll love g
RPNCalc is a nice, clean reverse-Polish-notation scientific calculator for KDE. It provides all the basics plus trig functions (including hyperbolic). It also has a handy memory list.
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kalc is a programmable scientific calculator, using RPN (Reverse Polish Notation). Its behaviour imitates a HP48/HP49 calculator. Works with real and complex numbers, unlimited size integers, arbitrary-precision real numbers and more.