fp.tar
        A C implementation of Backus' Functional Programming language.
        This one closely follows the syntax of the one distributed
        with 4.3BSD (which is close to Backus' syntax).
        Contributor: Andy Valencia <vandys@lindy.stanford.edu>
fpc.tar
        A compiler for Backus' Functional Programming language.  It
        translates FP to C, which you can then compile.
        Contributor: Edoardo Biagioni <biagioni@cs.unc.edu>
ifp.tar
        A variant of Backus' Functional Programming language.  Should
        run under any UNIX.  Written in C.
        Contributor: Arch D. Robison <robison@b.cs.uiuc.edu>