as well can use RPN Software calculators: Mac OS X Calculator Several Apple iPhone applications e.g. "reverse polish notation calculator" Several Android applications e.g. "RealCalc" Several Windows 10 Mobile applications e.g. "RPN9" Unix system calculator program dc Emacs lisp library package calc Xorg calculator (xcalc) ARPCalc, a powerful scientific/engineering RPN calculator for Windows, Linux and Android that also has a web-browser based version scientific/engineering calculator using the GIMP Toolkit (GTK+) F-Correlatives in MultiValue dictionary items RRDtool, a widely used tabulating and graphing software , a program for algebraic operations on NetCDF grids, part of Generic Mapping Tools (GMT) suite , a GTK desktop calculator Mouseless Stack-Calculator scientific/engineering calculator including complex numbers , a simple reverse polish notation calculator written in Python for Linux and MS Windows and published under the GNU GPLv2 license orpie, RPN calculator for the terminal for real or complex numbers or matrices Qalculate!, a powerful and versatile cross-platform desktop calculator Class libraries TRURL, a class library for the construction of RPN calculators in Object Pascal See also Calculator input methods FOCAL keystroke programming Stack machine Head-directionality parameter Scrambling (linguistics) References Further reading (NB. The book's cover title contains a typographical error reading "APS Mark 55" instead of the correct "APF Mark 55".) (13 pages) (13 of 702 pages) (4 pages) External links Rosettacode.org providing many implementations in several programming languages. http://rpn.codeplex.com/ Implementation of RPN with custom functions support and flexible list of operators. https://xrjunque.nom.es/ConvertAlg2RPN_RPL.aspx Free online Algebraic expression to RPN Converter Calculators Mathematical notation Science and technology in Poland Operators (programming)