OpenSSH is a bit odd, too. It was pretty much started by OpenBSD people, which makes the team more focused on OpenBSD; and the -portable version doesn't just ma

OpenSSH is a bit odd, too. It was pretty much started by OpenBSD people, which makes the team more focused on OpenBSD; and the -portable version doesn't just make it compile on Linux/Solaris/..., but also adds PAM support and other stuff. Most teams are more heterogenous, and most programs don't need to integrate that much with the OS.