Directory UNIX_C/XYZMODEM
    Source code and related files for the XMODEM, YMODEM, and ZMODEM file
    transfer protocols.  See also <UNIX-C.CKERMIT> for the KERMIT protocol.

    RZSZ0525.TAR
        An implementation of the XMODEM, YMODEM, and ZMODEM protocols,
        written in C.  From the original author.
        Contributor: Chuck Forsberg <caf@omen.uucp>
    UMODEM.TAR
        An implementation of the XMODEM, TERM II File Transfer Protocol #1,
        and TERM II File Transfer Protocol #4.  This version runs under
        several versions of UNIX.
        Contributor: Dave Curry <davy@riacs.edu>
    XMODEM36.TAR
        An implementation of the Christiansen (XMODEM) file transfer protocol.
        This implementation works only under 4.2/4.3BSD.
        Contributor: Steve Grandi <grandi@noao.uucp>