Sredird is a serial port redirector that is compliant with the RFC 2217 "Telnet Com Port Control Option" protocol. This protocol lets you share a serial port through the network. RFC 2217 was orginally implemented in Cisco Terminal Servers in IOS version 11.x.
aftp is an FTP library and an FTP tool. The aftp tool is a good example on how to use the library. You need FTP functionality in your software? Use the aftp library! Now also atelnet(d), a client and server telnet between MS-Windows (server) and Linux.
Clio is a MUD client specifically for MUD2 (a direct descendant of Trubshaw & Bartle's original MUD), but which can also be used with any MUD. Features include ANSI colour, colour logging, scroll back, function keys, command editing, and command history.