pari-lisp Lisp bindings for Pari for a few different lisps. Currently planned are Racket: http://docs.racket-lang.org/foreign/intro.html Common Lisp: http://common-lisp.net/project/cffi/manual/html_node/Tutorial.html Guile: https://www.gnu.org/software/guile/manual/html_node/Dynamic-FFI.html