Manfred von Thun of Latrobe University in Melbourne, Australia has produced and is refining a functional programming language called Joy based on composition of functions rather than lambda calculus. It has turned out to have many similarities to Forth, due less to design than to a sort of parallel evolution and convergence.
For more comprehensive information, see http://www.latrobe.edu.au/philosophy/phimvt/joy.html and http://c2.com/cgi/wiki?JoyOfJoy