ThinLisp is a practical dialect of lisp for real world applications. You develop in Common Lisp, you deploy in C. ThinLisp programs are as fast as C, by design. Used for a decade in million line systems.
btTalk is an IM program for mobile platforms which wants to transform the common IM programs into small nets based in bluetooth(r) technology, also being available for the user to transfer files from one phone to other.