RPN

Very easy to use RPN CalculatorGPL-3.0-only

RPN

Reverse Polish Notation CalculatorGPL-3.0-or-later

RPNcalc

A simple, modern calculator that uses RPN (Reverse Polish Notation).GPL-3.0-only

Extended emulator of МК 61/54

Emulator of "Electronika МК 61/54" RPN programmable calculators.GPL-3.0-only

JRPN 16c

Programmer's calculator similar to an HP 16c.Apache-2.0