Terminal Emulation

Serengeti Systems - 3270, TN3270, 3770, and 3780 terminal emulation.
http://www.serengeti.com

LogNet Systems - 3270, 5250, VT420 terminal emulation software running under Microsoft
http://www.lognet-systems.com

Video Terminal and Terminal-Emulator Information - Archived information on video terminals character-cell video display terminals, serial-line remote graphics terminals and control codes, and software that emulates them.
http://www.cs.utk.edu/~shuford/terminal_index.html

Terminal.app - Terminal.app is a terminal emulator for GNUstep (http://www.gnustep.org) and other applications as a part of the Free Software projects released under GPL.
http://savannah.nongnu.org/projects/terminal/

Zephyr Development - TN3270E and TN5250 emulation software
http://www.zephyrcorp.com/

Debian GNU/Linux -- x-terminal-emulator - Different packages providing x-terminal-emulator under GPL.
http://packages.debian.org/stable/virtual/x-terminal-emulator

Terminal Emulation -HOWTO - An Introduction to Terminal Emulation with details and links about using different kinds of Emulators.
http://tldp.org/HOWTO/Text-Terminal-HOWTO-9.html

B.A.T.L. Advanced Technology - GTW420: terminal emulation for VT420, VT220, VT100, and ANSI
http://www.batl.com

dummynet - A FreeBSD system for emulating the effects of bandwidth limitations, propagation delays, bounded-size queues, and packet losses.
http://www.iet.unipi.it/~luigi/ip_dummynet/

newhartsystems.com - IBM 3270, IBM 5250, and DEC VT emulation software for Windows
http://www.newhartsystems.com/

IBM 3270 Terminal Emulator - x3270 is an IBM 3270 terminal emulator for the X Window System. Runs on most Unix-like operating systems [Gnu/Linux, Mac OS X, Solaris, Cygwin and also a TELNET connection], emulating either an IBM 3279 (color) or 3278 (monochrome).
http://x3270.bgp.nu/

Kermit 95 for Windows 95/98, Windows NT, and OS/2 - Freeware terminal emulation and file transfer package, with scripting capabilities and multiple character sets, for modem, standard or secure TCP/IP, serial, DECnet, and NetBios connections.
http://www.columbia.edu/kermit/k95.html

COM Port and Interrupt Notes - Lists for common interrupt (IRQ) values or settings and COM Port default settings.
http://www.mvps.org/winmac/comirq.html

IO Concepts - 3270 emulation, java 3270, console consolidation, mvs console
http://www.ioconcepts.com

mlterm - Multi Lingual TERMinal emulator. - A multilingual terminal emulator on X11 which supports various character sets and encodings and complex characters such as double width for East Asian, combining for Thai, Vietnamese, bi-direction for Arabic and Hebrew and Indic scripts in ISCII encoding is being experimentally supported.
http://mlterm.sourceforge.net/

Project "rxvt" at SourceForge - A colour vt102 terminal emulator released under GPL.
http://sourceforge.net/projects/rxvt

SDI Bermuda Ltd. - TN3270, TN5250, VT100 and VT220 terminal emulation software for Windows.
http://www.sdisw.bm

9term Terminal Emulator - An implementation for Unix of the terminal windows presented under the Plan 9 windowing system.
http://www.cs.usyd.edu.au/~matty/9term/

CQ Computer Communications - SNA over IP mainframe connectivity, 3770 RJE, 3270, 3780 Bisync, Enterprise Extender.
http://www.cq-comm.com/

VT100 Terminal Emulation - Information on Codes and Standards for Digital printers and terminals used by a Terminal Emulator with listed documentation for the printer or terminal being emulated.
http://vt100.net/emu/