Yeah ANTLR is used widely in the Java ecosystem, but I guess I am biased toward full programming languages rather than DSLs, which are usually written in C or C

Yeah ANTLR is used widely in the Java ecosystem, but I guess I am biased toward full programming languages rather than DSLs, which are usually written in C or C++. ANTLR can technically generate C or C++ code, but IME it's very bad, and I've never seen anybody use it "for real". Although JVM languages like Jython and JRuby don't use ANTLR; they use the same techniques as the C implementation of the language (the custom pgen language, and yacc, respectively)