Terminal Emulation for Windows desktops

The z/Scope Desktop terminal emulator is an agile solution for IBM AS/400, IBM Mainframe and UNIX server access from Windows desktops.

All the necessary tools for Terminal Emulation

z/Scope gives you all the necessary tools for terminal emulation. We support both enhanced IBM TN3270E and basic TN3270 emulation, as well as IBM TN5250E, UNIX VT100-420, SSH emulation and secure FTP integration.

An extensive multi-host, multi-protocol Terminal Emulator

Along with an extended protocol support, z/Scope offers fully integrated printer emulation. Manage as many host sessions as you need with our simple tabbed interface. Standard features include SSL and SSH security support, HLLAPI, OHIO API integration and more.

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Join our rapidly expanding global customer base and try the z/Scope Desktop Edition free for 30 days.

Need access from anywhere, anytime? Check out z/Scope Anywhere


Have any questions? Take advantage of our unlimited Pre-Sales Support.


TN3270E for IBM Mainframes
  • Supports extended TN3270 protocol.
  • Supports TN3270E, SSL 2/3 and TLS 1 protocols.
  • All the necessary tools for fast and modern terminal emulation.
TN5250S for IBM AS/400
  • Supports extended TN5250 protocols.
  • Supports TN5250E, SSL 2/3 and TLS 1 protocols.
VT100-420, SSH for Unix Servers
  • Emulation for VT100/VT220/VT320/VT420/SSH1/SSH2 Telnet Server protocols.
  • Supports Kermit, X-Modem, Y-Modem and X-Modem file transfer protocols.
  • All the necessary tools for Telnet Servers emulation.
  • Full multi-session FTP client integrated into the tabbed user interface.
  • Enhanced FTP support for AS/400 (both IFS and not IFS modes).
Printer Emulation
  • Display and printer emulations through standard 3270 and 5250 protocols.
  • Open and redirect IBM 3812/3287 printer sessions to your local or network printer.
  • Print-to-file and preview modes.
Tabbed, multi-session Terminal Emulation
  • Integrated tabbed multi-session terminal emulation, using multiple connection types simultaneously.
  • Allows you to open as many host sessions as needed.


Terminal Emulation
  • VT52, VT100-VT420, ANSI and SSH, TN3270, TN5250 Host access.
  • Support for extended TN3270 and TN5250 protocols.
  • Fully VT100/220/320/420 compatible.
  • Terminal emulation (models 2, 3, 4 and 5), both in normal and extended attribute modes.
  • Terminal emulation in both 24x80 and 27x132 screen resolutions.
  • Support for SSH1 (Secure Shell), SSH2 security protocols.
  • z/Scope communicates through standard 3270 and 5250 protocols for display and printer emulations.
Printer Emulation
  • Integrated printer emulation. z/Scope communicates through standard 3270 and 5250 protocols for display and printer emulations.
  • Fully Integrated Printer Sessions; Support for IBM 3812/3287.
  • Open and redirect IBM 3812/3287 printer sessions to your local or network printer.
  • SCS (SNA Character String) printer support is included in direct, print-to-file and preview modes.
  • Queue management.
  • Print jobs can also be exported as files and stored anywhere on the network.
  • Print to a default printer (just as you would with any other program).
  • z/Scope allows you to manage printing preferences by selecting and modifying different settings.
  • In 'Printing Preferences' you can view, edit, delete and duplicate printer settings.
  • Screen Hard Copy Printing.
File Transfer
  • Full multi-session FTP client integrated into the tabbed interface.
  • IND$FILE, KERMIT, X/Y/Z-MODEM transfers integrated in the same common interface.
  • IND$FILE for VM/TSO/CICS file transfer support.
  • Integrated File Transfer Manager.
  • Transfer services can work in the background.
  • File Transfer Enhancements.
  • Enhanced FTP support for AS/400 (both IFS and not IFS modes).
  • Queue management.
Multi-session and Multi-connection
  • Multi-session/multi-connection terminal emulation capabilities, allowing you to open as many sessions as needed.
  • View up to four emulations in the same display using a tile system.
  • Multiple emulation modes simultaneously: TN3270, TN5250 and VTxxx.
  • Allows thousands of concurrent users from a single host or server farm for optimal scalability.
  • Full multi-session FTP client integrated into the tabbed interface.
Keyboard customization
  • Compatibility and support for a wide range of standard keyboards such as IBM, EXTRA, IRMA and RUMBA.
  • Full control and customization of the keyboard, allowing you to re-map virtually any key to new key/s and even mouse clicks.
  • User-friendly keyboard configuration.
  • Enhanced keyboard and mouse functionality.
  • Multiple Keyboard Profiles.
  • Availability of keypads; groups of buttons that simulate keyboard keys.
Task automation
  • Macros: Record any sequence of keystrokes and reproduce them at any time by creating macros. The Macro editor allows you to fine-tune your macro code later.
  • Navigators: provide a new way to automate navigation sequences and quickly get past routine procedures like welcome and login sequences.
  • Auto-Fills: automatically fill in one or more input fields with a simple mouse click.
  • Auto-Suggestion: easily reproduce previously typed text with only one click.
  • User-defined Hotspots: enable point-and-click operations for faster and more intuitive navigation.
  • HLLAPI, EHLLAPI, and WinHLLAPI support.
  • OHIO (Open Host Interface Objects) API support. Macro capability through VBScript scripting language and the integrated Active Script debugger.
  • Support for SSL 2.0 and 3.0 (Secure Socket Layer Technology), as well as TSL 1.0 (Transport Layer Security) security protocols.
  • Secure FTP sessions with SSL/TLS.
  • 128-bit encryption allows users to securely access remote hosts over any network and safely transfer files between systems.
  • Support for SSH1 (Secure Shell), SSH2 security protocols.
Desktop Remote Access
  • Remote Desktop connectivity.
  • VNC connectivity.
User-friendly interface and navigation
  • Collapsible panel for quick access to connections, screen styles and macros.
  • Integration with Microsoft® Office suite. Export text in the emulation display directly to Word or Outlook® applications.
  • User-friendly keyboard configuration.
  • Advanced edit options let you customize and get full control of copy, cut and paste operations.
  • Switch between many open connections by clicking on the corresponding tab.
  • Easily define Connections, Navigators, Auto-Fills and Hotspots through step-by-step wizards and context menus.
  • Take advantage of the intuitive, task-oriented and user-friendly interface.
  • Start page, with RSS aggregator, features links for configured connections.
  • Improved legibility through TN BRIDGE font, well-fit for most terminal and screen resolutions.
  • Support for mono-spaced and non-mono-spaced fonts.
  • Screen history provides convenient one-click access to previously visited screens. Display any particular screen directly by selecting it from the screen thumbnails menu.
Operating System compatibility
  • Windows 98
  • Windows ME
  • Windows NT
  • Windows 2K
  • Windows XP
  • Windows Vista platforms
  • Windows 7
  • Windows 8
  • Windows 10
  • Windows Server 2003/2008/2012
  • 64 bit compatible.
Localization (languages and characters support)

Support for 7 different languages:

  • English
  • French
  • German
  • Italian
  • Spanish
  • Portuguese
  • Swedish

International character support, including support for custom ASCII/EBCDIC conversion tables:

Australia - CP037 Austria - CP27 Austria - CP1141
Belgium - CP500 Belgium - 1148 Canada - CP037
Canada - CP1047 Canada - CP1140 Czech – CP2975
Denmark - CP277 Denmark - CP277 Finland - CP278
Finland - CP1143 France - CP1147 France - CP297
Germany - CP273 Germany - CP1141 Greece - CP423
Greece - CP875 International -CP850 Iceland - CP871
Iceland - CP1149 Italy - CP280 Italy - CP1144
Latin America - CP284 Latin America - CP1145 Netherlands - CP037
Norway - CP277 Norway - CP1142 Poland - CP2978
Portugal - CP037 Russian - CP2979 Spain - CP284
Spain - CP1145 Sweden - CP278 Sweden - CP1143
Switzerland - CP500 Switzerland - CP1148 United Kingdom - CP285
United Kingdom - CP1146 United States - CP037 United States - CP037/2
United States - CP1047 United States - CP1140 ....
Integration with other applications
  • DDE Support.
  • HLLAPI, EHLLAPI, and WinHLLAPI support.
  • OHIO (Open Host Interface Objects) API support. Macro capability through VBScript scripting language and the integrated Active Script debugger. Read more.

Find out which z/Scope edition is most convenient for you on the edition comparison chart.

Competitive advantages

At a Glance...

  • Better functionality than existing products, all at a competitive price.
  • Designed to run on the latest versions of Windows®, eliminating the need for troublesome and expensive backward compatibility.
  • Offers the most intuitive, user-friendly and task-oriented interface.
  • Helps reduce your IT budget.

The experienced developers of z/Scope set out from the beginning to offer our clients a robust, updated, and quality product. z/Scope arises as an alternative to the old terminal emulators, offering extensive functionality at a competitive price.

z/Scope offers everything you need to interact with hosts over TCP/IP and SSL protocols, leaving behind technologies that have become obsolete. The result is an agile, fully featured and innovative solution that will radically change your previous experience with terminal emulators.

Since it is so easy to configure and even easier to use, it has become an ideal terminal emulation solution providing user-friendly and task-oriented interfaces, which make for a rapid and more pleasant learning curve for end users.

Increased Productivity

All z/Scope features contribute to improving your terminal emulation experience. z/Scope users are able to save time and PC/Server resources, enjoy a beautiful interface, have all the functionality that they need, with the necessary technical support backing them up, for a minimal investment.

z/Scope offers a powerful, modern and feature-rich terminal emulator that helps reduce your company’s IT budget. Find out which edition is best for you.


Optimize your investment. Pay for what you need.

Find out which z/Scope edition works best for you.

Desktop Editions

Web Edition

Express 3270

Express 5250

Express VT


z/Scope Anywhere

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Download TN3270 Terminal Emulator Download TN5250 Terminal Emulator Download VT100 Terminal Emulator Download z/Scope Terminal Emulator Download z/Anywhere Terminal Emulator
VTxxx Emulation          
TN3270E Emulation          
TN5250E Emulation          
Browser Based          
Touch interface support          
Stand Alone          
Integrated Printer Emulation          
FTP Client (1)       Optional
SSL/TLS Support          
SSH 1/2 Support          
HLLAPI Support (2)          
Multilanguage Support          
Multisession interface          
Keypads (2)          
Auto-Suggestion (2)          
Screen History (2)          
Dynamic Toolbars (2)          
Screen Styles          
Customizable Macros (2)          
Support for OHIO API (2)          
Auto-Fills (2)          
Navigators (2)          
Customizable HTML Welcome Page          
Office Integration          
Centralized Configuration          
SSL Tunneling
Windows OS Support (3)          
Mac (4)          
Linux (4)          
Android (4)          
iOS (4)          

(1) The FTP client function is optional for the Classic edition. For a minimal additional investment you will get a full FTP Client seamlessly integrated into the tabbed z/Scope interface.

(2) This feature is available for TN3270 and TN5250 connections only.

(3) All z/Scope editions are compatible with Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Windows 2003 Server, Windows Server 2008 and Windows Server 2012. Older versions of Windows including Windows 98/ME/2000 are also supported.

(4) Need access from anywhere, anytime? z/Scope Anywhere offers an HTML5-based client. However, the server should first be installed on a Windows PC. Users then launch the client screen by entering a corresponding URL into any HTML5 browser. As it does not require any additional plugins or client side installations, z/Scope Anywhere can be used from any device with an HTML5 browser, including Windows, Mac, Linux, iOS, Android and Chromebook devices.


Software Requirements:

  • Microsoft Windows Operating System:
    i.e.: Windows Server 2003/2008/2012, Windows 10, Windows 8.x, Windows 7, Windows Vista, Windows XP and older (ME/2k/98SE/NT).
  • z/Scope is compatible with 32-bit and 64-bit Operating Systems.

Hardware Requirements:

  • Pentium 2 or equivalent computer/processor. Recommended: Pentium 3 or superior.
  • 256 Mb Memory (RAM).
  • 50 Mb free of free disk space.

For developers

z/Scope's Scripting Capabilities

Open Host Interface Objects (OHIO)

OHIO addresses the need for a standardized advanced programming interface that can access host data. OHIO does not modify the TN3270/TN5250 protocol or datastream but instead provides a common access method to host data once it arrives at the client. It uses an Object Oriented approach to divide the data into logical objects, and provides methods on those objects to allow standard access to the host data.


HLLAPI is a standard programming interface that provides access to a host emulator session. Functions are provided for reading host screen data (such as the characters and attributes), for sending keystrokes, and for performing other emulator-related functions. The EHLLAPI interface is a single call-point interface. There is a single callable API through which all EHLLAPI functions are requested. On each call to the interface the application provides a function number which identifies the function requested, a pointer to a data buffer, a pointer to the length of the data buffer, and a pointer to a return code. WinHLLAPI is based on the familiar EHLLAPI.API. It encompasses all of its existing functionality and adds extensions that take advantage of the Windows message-driven environment.

Contact us if you wish to get more information about z/Scope's Scripting Capabilities.


Product License Download
z/Scope Express VT v6.2 Free 30-Day Trial  
z/Scope Express 3270 v6.2 Free 30-Day Trial  
z/Scope Express 5250 v6.2 Free 30-Day Trial  
z/Scope Classic v6.2 Free 30-Day Trial  

Not sure which z/Scope edition is the best for you yet? Take a look at the editions comparison table.