OpenSSH and OSSH are related, whereas lsh is something completely different. While lsh is a fresh implementation of protocol version 2.0, OpenSSH is derived from OSSH (ossh-1.2.16), which in turn is derived from ssh-1.2.12 (Yl�nen's Dec 95 version). All security bugfixes and some other features from OpenSSH were ported back to OSSH, so both speak now protocol 1.3 and 1.5. OpenSSH is developed on OpenBSD, but ports to Linux, Solaris and FreeBSD do exist. OSSH supports autoconf and is tested on Solaris, HPUX, RedHat and FreeBSD. -markus
