Hello, I want to suggest a new boost library, that could be used to parse and run lisp programs. I think of a way to create at compile time a language interpreter with list syntax, but with only the needed features. It could be used for people who need to run simple scripts from a C++ program, but who don't want to use python. Here is an naive example to illustrate what I mean (I hope it is clear enough by itself) using boost.lisp // we create the lisp interpreter with integer and math operation support lisp::lisp<lisp::with_int, lisp::with_math> mylisp; // we run the lisp program : (+ 10 20) lisp::result res = mylisp.run(lisp::word("+") >> 10 >> 20); std::cout << ret.as<int>() << std::endl; // same thing but from a string res = mylisp.run(lisp::parse("(+ 10 20)") ) It may then be possible to expose C++ functions and classes the same way it has been done for python by the boost.python library. What do you think of this idea ? Guillaume