Back in the day, jobbing oil & gas process engineers used a handy GWBASIC utility called ESI. It was written in 1984 by Engineering Software Inc and supported to 1988. The start screen looked like this:
I used the utility on PC’s running Windows for years. Then in 2015, Microsoft released Windows 10 which did not support GWBASIC. As a result, I lost access to ESI.
A few years ago, I discovered a free, cross-platform emulator for the GW-BASIC family of interpreters called PC-BASIC. I installed it on my PC running Windows 10 and now Windows 11 and it works.
I am able to use use ESI once again.
Follow this link to download PC-BASIC by Rob Hagemans.