[giancarlostoro]

As ZenoArrow mentioned, it's like C or C++ compilers, they may be different and made by different teams but they support a specific set of rules, if your code follows those specific rules any compiler that implements the needed features should be able to run your code.

Common Lisp is famous for this, and some Scheme languages as well. In theory this framework should be able to run in another Scheme. Even HackerNews which is it's own Lisp variant once ran on Racket (might still) but it's not impossible to be ported to another Lisp variant (sometimes with minimal or no overhead).