The OpenSSH Project turns five years old today. From their news release:

Five years ago, in late September 1999, the OpenSSH project was started. It began with an audit, cleanup and update of the last free version of Tatu Ylonen’s legacy ssh-1.2.12 code. The project quickly gathered pace, attracting a portability effort and, in early 2000, an independent implementation of version 2 of the SSH protocol. Since then, OpenSSH has led in the implementation of proactive security techniques such as privilege separation & auto-reexecution.

Sun’s SSH (shipped with Solaris 9 and later) is based on OpenSSH.