ywho v1.9 is a who-type utility displaying not only who is logged in, but also general system information and commands run by the users. Includes a rwhod replacement with central server, allowing user information to be gathered across routers.
You can download it from the following link: https://packetstormsecurity.com/files/download/12886/ywho-1.9.tar.gz
Source: https://packetstormsecurity.com/files/12886/ywho-1.9.tar.gz.html