Write Lisp in language X
Just because you're using a language other than Lisp doesn't mean you need to stop writing Lisp. Below is a list of libraries that offer support for "Lisp-style" programming in other languages:

You can also exchange data in s-exp format with programs written in other languages using the libraries listed below:

  • SEXP---(S-expressions) for C
  • sfsexp for C and C++
  • lispreader for C