I prefer GW-BASIC 1.0, as open sourced by Microsoft a few years ago, but with some changes to make it possible to build it easily yourself: https://gitlab.com/

I prefer GW-BASIC 1.0, as open sourced by Microsoft a few years ago, but with some changes to make it possible to build it easily yourself: https://gitlab.com/tkchia/GW-BASIC https://gitlab.com/tkchia/GW-BASIC Also do a pip3 install pcbasic to get this great reimplementation of BASICA/GW-BASIC done in python for modern systems: http://robhagemans.github.io/pcbasic/ http://robhagemans.github.io/pcbasic/