These are the source code archives (where available) for the different
versions of ssh client on this CD.

egd-0.8.tar.gz         - entropy gatherer, used with OpenSSH (sometimes).
openssh-2.2.0p1.tar.gz - the OpenSSH source code.
openssl-0.9.5a.tar.gz  - OpenSSL - provides some crypto routines for OpenSSH.
putty                  - Win32 ssh+telnet client.
putty.zip              - a zip archive, if more confeniant.
zlib-1.1.3.tar.gz      - Compression routines for OpenSSH.