dummynet - A FreeBSD system for emulating the effects of bandwidth limitations, propagation delays, bounded-size queues, and packet losses.
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).
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.
LogNet Systems - 3270, 5250, VT420 terminal emulation software running under Microsoft
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.
newhartsystems.com - IBM 3270, IBM 5250, and DEC VT emulation software for Windows
SDI Bermuda Ltd. - TN3270, TN5250, VT100 and VT220 terminal emulation software for Windows.
Serengeti Systems - 3270, TN3270, 3770, and 3780 terminal emulation.
9term Terminal Emulator - An implementation for Unix of the terminal windows presented under the Plan 9 windowing system.
Terminal Emulation -HOWTO - An Introduction to Terminal Emulation with details and links about using different kinds of Emulators.
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.
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.
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.