[RickSanchez2600]

It is no longer maintained or updated. FreeBASIC can take QuickBASIC Code but it needs to be modified a bit.

https://www.freebasic.net/

Visual BASIC is emulated via Jabaco and converted to Java Runtine files. http://www.jabaco.org/ but it hasn't been maintained in a while either. It does VB 6.0 but misses ADO and other libraries needed for Data access, you have to use Java based ones instead with BASIC syntax.

[jasonjayr]

http://www.qb64.net/ <-- IIRC that's supposed to be a fully backwards compatible + a bunch of modern enhancements to build QuickBasic/QBasic on modern platforms.

UPDATE: .... And, I should read the link before commenting, because QB64 is mentioned right there nearly above the fold.

[rzzzt]

I used Pyxia's IBasic IDE (looks to be defunct) back in the day to build a game in Windows: http://web.archive.org/web/20070630082925if_/http://www.pyxi...

[nickpsecurity]

For VB alternatives, folks might be interested in Gambas:

https://en.wikipedia.org/wiki/Gambas

[cylinder714]

And, for the sake of completeness, there is BaCon, a BASIC-to-C transpiler written in Korn shell, compatible with bash and zsh:

http://www.basic-converter.org/