Re:Free42: An HP-42S Calculator Simulator (2005)
by thomasokken on Sunday September 22, 2019 @09:53PM
(#21045326)
I started the project in 2004, and the commit history goes back to 2005, but it's only been on GitHub for a couple of weeks.
The tool on github (and the homesite):
https://thomasokken.com/free42/
have been updated recently (2019).