ttysnoop for kernel 2.6 is a small program that allows an administrator to snoop on login terminals. It is based on the ttysnoop program but works with kernel 2.6, which doesn't use BSD-style PTYs.
Linchat is a simple chat program for local Unix users. It has only been
tested under Linux, but may work under other Unixlike OSes. It requires
no separate server and does not require root access to install.
OpenChatterBox is an LANChat-like application which is designed for communicating over LANs. It uses a protocol similar to the ChatterBox utility for Windows, but doesn't support colors, pictures, or user modes yet.
Gerstensaft is an easy to use graphical oriented
frontend for the sendfile(1) command of the SAFT
file transfer system. It features the ability to
send files and directories and provides a history
for addresses.