Best Open Source Windows RPN Calculators 2026

RPN Calculators for Windows

RPN Calculators Windows BSD License Clear Filters

Browse free open source RPN Calculators and projects for Windows 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

RPNcalculator

Nice looking calculator using Reverse Polish Notation (RPN) written for Windows. It supports DEC, HEX, BIN, OCT numbers, GRAD, RAD and DEG.

6 Reviews

Downloads: 14 This Week

Last Update: 2016-07-31
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2

TRURL

A suite of RPN calculators and a class library for Object Pascal

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 for the RPN Engine • TRURL B: RPN calculator in the design of the famous calculators by Dieter Rahms for Braun • TRURL G: Desktop RPN calculator inspired by the UI of the DSKY unit of the Apollo Guidance Computer (AGC)

Downloads: 9 This Week

Last Update: 2026-03-15
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