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Web-Based 5250 Terminal Emulator for IBM i Systems

Web-Based 5250 Terminal Emulation for IBM i, AS/400, and iSeries Environments

Jubilant Terminal Emulator gives users secure browser-based access to 5250 applications on any device, with no local software installation required.
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Secure 5250 Access That Supports the Systems You Need

IBM i, iSeries, and AS/400 applications support core business processes for many organizations. Traditional desktop emulators remain a common way to access these legacy systems, but they can create challenges around installation, maintenance, security, and user access in modern environments. Jubilant Terminal Emulator provides a modern, browser-based way to interact with your existing IBM i systems without a full migration.

Browser-based 5250 access, no local installation

Reduce desktop maintenance and make 5250 access easier to roll out across users, teams, and approved devices.

Manage users and settings from one place

Give IT teams a simpler way to control access, configuration, permissions, and user settings through centralized administration.

Secure access to critical IBM i applications

Help protect essential IBM i connectivity with secure browser-based communication, controlled user access, and enterprise-ready security features that support environments with:
  • TLS, SSH, HTTPS, and WebSocket support
  • MFA and SSO support
  • Session visibility and management
  • Reduced endpoint dependency
  • KPMG penetration testing
  • Support for DORA readiness
  • Support for 23 NYCRR Part 500 requirements
  • Support for U.S. federal MFA mandate alignment

Deploy quickly across cloud, data center, or local environments

Support fast, flexible deployment with high-performance, data-light access across the environments your business already uses.

Designed for modern devices

Enable access across desktop, tablet, mobile, and touch-screen environments, with support for modern screen readers including NVDA, JAWS, and VoiceOver.

See What Our Clients Have To Say About Us

“We have in-house RPG skills and wanted to implement the business logic on our iSeries but needed to improve the usability for users. Jubilant’s terminal emulator is easy to use and we’ve been able to solve this problem in just one month”
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Key Capabilities of Jubilant 5250 Emulator

Jubilant gives organizations a faster, more secure, and more flexible way to access IBM i, iSeries, and AS/400 systems. Our browser-based terminal emulator modernizes how users access core legacy applications, without forcing a disruptive migration away from the systems your organization depends on.
Browser-based 5250 emulationDeliver secure, browser-based access to IBM i, iSeries, and AS/400 applications using 5250 connectivity, without local emulator installs, plugins, or device-specific software.
Macro wizard supportSimplify repetitive 5250 tasks by turning common actions into guided shortcuts, helping users manage everyday workflows more efficiently.
Custom UI optionsCreate tailored user experiences that make 5250 applications easier to use and navigate, with built-in flexibility to improve the look, feel, and usability of host system access.
Documented APIConnect Jubilant with wider business systems using documented API options that help technical teams build integrations, automate processes, and support advanced workflows.
Microsoft Office and Office 365 integrationIntegrate host system processes with familiar productivity tools, including Microsoft Office and Office 365, to support more efficient ways of working.
UI modernization optionsUse web service generation and user interface modernization options to improve legacy application experiences without requiring a full system replacement.

Modernize 5250 Access at Your Own Pace

Jubilant Terminal Emulator gives organizations a practical way to improve access to 5250 applications without disrupting the IBM i systems that support core operations. Start with secure, browser-based terminal emulation. Then, when the time is right, extend the experience with workflow improvements, custom interfaces, integrations, and modern UX options — all while keeping the core applications you rely on in place.

Secure, Web-Based 5250 Terminal Emulation Built for Enterprise

Jubilant gives enterprise teams a secure, browser-based solution for 5250 application access while simplifying administration, reducing desktop dependency, and supporting future modernization.
Secure, compliant, and automatically updated
Support for complex environments
30+ years of industry experience
Browser-based user access
Available as a managed service
Documentation, online and telephone support
Centralized administration
Access Mainframe, iSeries, Unix, VMS, MultiValue systems, and more
Built for distributed teams
Enterprise-grade authentication
Desktop, mobile, tablet, and touch support

Frequently Asked Questions

Software that reproduces the IBM 5250 terminal so users can work with IBM i, iSeries, and AS/400 applications from a modern device. It is how most organizations reach these systems today.
A pure HTML, browser-based 5250 / tn5250 emulator, centrally managed through the Jubilant Administration Center. Nothing is installed on user devices.
No. Sessions run in any browser on any device, including legacy browsers without HTML5 support.
Yes. Desktop, mobile, tablet, and touch devices all get the same controlled terminal experience.
Yes. Hosts, users, sessions, and settings are administered from one secure location, removing per-desktop maintenance.
Yes. It supports the latest SSL/TLS, is KPMG penetration tested, and supports DORA readiness, 23 NYCRR Part 500 requirements, and U.S. federal MFA mandate alignment.
Yes. It runs on MS Azure and Oracle Cloud, as well as in your data center or locally.
Yes. Jubilant is natively compatible with modern screen readers, including NVDA, JAWS, and VoiceOver.
Yes. The same platform extends to web service generation and UI modernization, so 5250 screens can evolve when you are ready.
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Modernize 5250 Access With Jubilant

Unlock a faster, more flexible way to access your 5250 applications with Jubilant. Improve usability, streamline workflows, and get more from your existing systems. Speak to our team today.
Start your 7-day evaluation Answer a few quick questions and we will get you the correct terminal emulation download, with our engineers alongside your team from day one. Try Jubilant TE free