Browse free open source RPN Calculators and projects below. Use the toggles on the left to filter open source RPN Calculators by OS, license, language, programming language, and project status.

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  • 1
    pRPN

    pRPN

    RPN calculator running on Windows and Linux

    Graphical Reverse Polish Notation calculator running in Linux and Windows. Programmable. Provides Reals, Complex, Vectors, Matrices, Binaries, Lists, Expressions, Strings and Programs. Implements RPL, the HP programming language of HP-28 and HP-48 series.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 2
    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4

    C_Sharp_Calculator

    RPN based calculator in C#.

    Currently, this is the first version of an RPN calculator made to be easy to implement for any C# project requiring parsing of text into calculable data. Using RPN (Reverse Polish Notation) to place strings in a specific format to allow fast processing for parsing and evaluating the string.
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 5
    The purpose of the CoCalc project is to develop a simple RPN calculator application for use on laptops running OS X. It has been developed in Cocoa and Objective C, although it may change to a PyObjC application in the future.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    PG Calculator is a powerfull scientific calculator and an excellent replacement for standard calculator. It ofers full customizable user inteface and looks like real calculator on user desktop. PG Calculator works in Algebraic and RPN mode.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Suite of small web apps: calendar, address book, RPN calculator, DVD title database, password wallet and a page for generally useful information. Includes a program to send email reminders of calendar events.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    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.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    GTK based RPN calculator for Linux/Unix. Currently under development, but supports Real Numbers, Complex Numbers, Matrices, and Vectors
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10

    npadcalc

    Desktop RPN calculator

    A desktop RPN calculator app, optimized for use with full-size keyboard. Written in Rust with gtk-rs GUI. This app was developed as a learning project, but one may still find it useful for performing simple calculations.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Small RPN (HP48 style) calculator, working in text mode, in interactive way (with GNU Readline) or automic way (from a pipe)
    Downloads: 0 This Week
    Last Update:
    See Project
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