Scientific/engineering firmware repurposing HP business calculators!
engineering programmable calculator
A graphing calculator that's both powerful and easy to use.
Programmable graphical scientific calculator
The classic RPL programming language reimplemented and reimagined.
The functional model of the old calculator series Wang 700 and 15VSM
Interval Calculator for Engineer
Circuit simulators like SPICE for low memory computers
Programmable Calculator (IP functions, create user functions)
Convert between calendars and work with date ranges.
Console remake of old "Lunolet" game.
RPN calculator running on Windows and Linux