Thanks for mentioning QB64. While I haven't tried it out (yet), having an integrated IDE and DOS emulation does sound pretty cool for nostalgia!
Personally, many many years ago when I was fed up with QB's limitations, first versions of FreeBasic[1] were published and I made the switch. I haven't been following its development closely for some years now, but it seems the language has come a long way since then, e.g. supporting OO. It still can be told to behave QB-compatible, though. Maybe this is interesting for anyone looking for an open, more modern implementation of Basic.
