My 'desktop' calculator on my Linux machines: http://lashwhip.com/grpn.html http://lashwhip.com/grpn.html (yes, I know that xcalc has an HP mode, but I only l

My 'desktop' calculator on my Linux machines: http://lashwhip.com/grpn.html http://lashwhip.com/grpn.html (yes, I know that xcalc has an HP mode, but I only learned of that mode long after I'd begun using GPRN. The calculator on my Android phone (I 'disabled' the maker installed one): https://play.google.com/store/apps/details?id=org.efalk.rpncalc&hl=en_US&gl=US https://play.google.com/store/apps/details?id=org.efalk.rpnc... And I've still got my original 80's HP-15C.