Main Page

Welcome to The x3270 Wiki

This Wiki contains documentation for the x3270 family of IBM 3270 terminal emulators.

wx3270 main window

Navigating the Wiki

The x3270 Wiki is organized in two ways: Hierarchically and by categories.

Hierarchical pages have a slash (/) in their names. The pages under each specific emulator are generally organized in a hierarchy. For example, the page that describes how c3270 keymaps work is called c3270/keymap.

Pages can also belong to one or more categories. Typical categories are command-line options and resources. There are also sub-categories, for example, c3270 command-line options. The list of all categories is (here).

The Wiki makes extensive use of hyperlinks. Wherever possible, a term that is defined elsewhere in the Wiki is always represented by a hyperlink.

x3270 variants

Interactive emulators

  • x3270 is the original version. It is a graphical interactive 3270 emulator that runs on Linux, Solaris, macOS (with XQuartz installed), FreeBSD and other POSIX-based operating systems.
  • wx3270 is a modern interactive graphical 3270 emulator for Microsoft Windows.
  • c3270 is an interactive 3270 emulator that runs on a character-mode terminal on POSIX systems. A character-mode terminal can be an emulator such as xterm, gnome-terminal, kterm, a macOS Terminal window, or a Linux console, or a real hardware terminal such as a DEC VT100.
  • wc3270 is an interactive 3270 emulator that runs in a console window on Microsoft Windows.

Screen scraping tools

Daemon processes

  • pr3287 is an IBM 3287 printer emulator. It can be used in conjunction with one of the interactive terminal emulators to associate a printer with the login session, or it can run standalone to direct mainframe print jobs to a printer on a workstation. (On Windows, it is also called wpr3287.)
  • b3270 is a generic back end for 3270 emulators. b3270 implements the 3270 protocol and host input/output, and communicates with a front end application using a simple XML- or JSON-based protocol. It runs as a back end for wx3270.

A note on versions

This Wiki describes the current releases of the x3270 family. Features added in release 4.0 and above are clearly identified either inline or in a Version history section at the bottom.

See also

A good place to start is the Overview page. Also check out the FAQ, tutorials, and resources (settings) pages.

For additional information, try the original x3270 Webpage.

And check out these other resources.


  This Wiki is still actively under construction, so there may be broken links or missing information. It should improve over time.