Shishi uses Libtasn1 by Fabio Fiorina, Libgcrypt and Libgpg-error by Werner Koch, Libidn by Simon Josefsson, cvs2cl by Karl Fogel, and gdoc by Michael Zucchi.
Several GNU packages simplified development considerably, those packages include Autoconf, Automake, Libtool, Gnulib, Gettext, Indent, CVS, Texinfo, Help2man and Emacs.
Several people reported bugs, sent patches or suggested improvements, see the file THANKS.
Nicolas Pouvesle wrote the section about the Kerberos rsh/rlogin protocol.
This manual borrows text from the Kerberos 5 specification.