9 /
9gridchan
Replace Guest with your username.
; 9fs tcp!cloud9p.org!9000 /n/chat ; cat /n/chat/chat & ; while() read | sed '1s/^/Guest → /' >>/n/chat/chat
From UNIX:
Install plan9port.
On OpenBSD:
$ doas pkg_add plan9port
On Linux, you may have to compile from source.
$ 9 9p -a 'tcp!cloud9p.org!9000' read chat & while read l; do echo $USER → "$l" done | 9 9p -a 'tcp!cloud9p.org!9000' write chat