From html/Intro.html:

   c3270 is a curses-based IBM 3270 terminal emulator.  It can be used to
   communicate with any IBM host that supports 3270-style connections
   over TELNET.  It can also communicate with hosts that use line-by-line
   ASCII mode to do initial login negotiation before switching to
   full-screen 3270 mode.

 From "pr3287/README":

   pr3287 is an IBM 3287 printer emulator.  It connects to an IBM host via
   TELNET, using TN3270 or TN3270E.  It supports SCS (SNA Character Stream).


 This release provides some support for SSL, Tcl, and DBCS.

 Graphics not (yet) supported.

 Some extended highlighting not (yet) supported.

WWW: http://x3270.bgp.nu/
 or  http://www.geocities.com/SiliconValley/Peaks/7814