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Brown University tn3270 X is a terminal emulation program for connecting to computers which use IBM 3270 terminals. Major features of the emulation include color, extended highlighting, support for different screen and font sizes, and SSL support. Some more obscure features include support for the APL character set, and support for file transfer and remote printing when tn3270 is used with an IBM VM/CMS host.

To use tn3270, the host computer must provide a telnet server which supports the extensions for 3270 terminals. On your Mac, you must be able to connect to the host server using TCP/IP.

What's New

Version 3.4.0:
  • Support for OS X 10.9 Mavericks
  • Experimental support for the tn3270e protocol
  • Experimental support for SSL client certificates


OS X 10.3.9 or later

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5 1


Current Version (3.x)


Downloads 12,000
Version Downloads 940
License Free
Date 10 Nov 2013
Platform OS X / PPC 32 / Intel 32
Price Free
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