BetterTelnet
   for Mac OS
   http://www.club.cc.cmu.edu/~rbraun/macssh/

GTW420
   Terminal emulation software for telnet operations for VT220/VT420/ANSI terminals.
   http://www.gtw420.com/

HyperTerminal Private Edition
   An update for the HyperTerminal application shipped with Windows.
   http://www.hilgraeve.com/htpe/index.html

Java Telnet/SSH Applet
   Open source, fully featured Telnet/SSH applet/application with embedded VT320/ANSI emulation. It can be used to provide access to telnet services via a java capable WWW browser.
   http://javassh.org/

LiTE / STEP++ from UASYS.com
   Connectivity software products that connect to Linux, SCO UNIX, AIX, and AMOS hosts.
   http://www.uasys.com

NetTerm from Intersoft
   Performs telnet and dialup. Supports BBSes, Zmodem, and optimization for various online/dialup databases.
   http://www.netterm.com

Powerlan-USA Terminal Emulators
   Mac and Windows ports of terminals such as Webterm, 5pm Term, WebTerm X and eXodus.
   http://www.powerlan-usa.com

Telnet for Unix Terminals
   Unix systems with PowerTerm terminal emulation. It is optimized for supporting Windows 3.1/95/98/NT platforms.
   http://www.ericom.com/pts.asp

Useless Telnet
   A 3D Telnet client for Windows that displays its output like a Star Wars crawl.
   http://www.uselesscreations.com/UselessTelnet/

ZOC
   A telnet client, secure shell client and terminal emulator that allows a PC to connect to hosts and mainframes via telnet, secure shell (SSH/SSH2) modem, serial cable or ISDN.
   http://www.emtec.com/zoc/

taTelnet
   Free (under the GNU General Public License) cross-platform Telnet program with versions for Windows and GNU/Linux.
   http://linux.techass.com/projects/tatelnet/