talkd(8) on OpenBSD
The text 100562fbc4ca, as OpenBSD 2.5, OpenBSD 2.4, OpenBSD 2.3, OpenBSD 2.2, OpenBSD 2.1 shipped it.
remote user communication server
The text 100562fbc4ca, as OpenBSD 2.5, OpenBSD 2.4, OpenBSD 2.3, OpenBSD 2.2, OpenBSD 2.1 shipped it.
remote user communication server