InterSoft International, Inc
SecureNetTerm - client/server designed to interface with telnet, telnet-TLS/SSL.
KpyM Telnet/SSH Server free telnet and ssh server for Windows.
DX Telnet is a Windows based, DX oriented, telnet application.
Pragma Systems, Inc
Pragma Telnet Server is an advanced and high-performance telnet server.
SMPP protocol library for fast and easy SMSC client development.
SMS Server software
GSM Phone or IP SMSC-to-PC Enterprise SMS Server to send & receive messages.
Maintain and monitor your remote systems easily via SSH and Telnet protocols.
InterSoft International, Inc.
NetTerm is a network terminal which can act as a telnet client.
NetSarang Computer, Inc.
Perform system maintenance operations using SSH, TELNET, and RLOGIN protocols.
Poderosa is an open-source terminal emulator for SSH, Telnet, FTP, etc.