Sitemule Workspace, powered by the IceCap Engine, transforms traditional IBM i 5250 green-screen applications into modern, web-based user interfaces while preserving the proven reliability, security, and business logic of the IBM i platform.
Sitemule Workspace redefines how organizations interact with IBM i (AS/400) systems by converting legacy 5250 applications into intuitive, browser-based environments. Built on IceCap technology, it allows businesses to retain their existing applications and core logic while introducing modern usability, accessibility, and integration capabilities that align with today’s digital expectations.
"Modern UI. Zero rewrites. IceCap transforms 5250 into responsive web apps without touching your code."
The IceCap Engine enables rapid transformation by emulating 5250 green screens into responsive, web-based applications, often in just days rather than months. This fast process removes the need for large system overhauls while immediately enhancing usability and accessibility. Existing applications become easier to operate and better aligned with modern workflows, all while continuing to run on the same trusted IBM i business logic that supports daily operations.
IceCap delivers a fully customizable modern user experience that replaces rigid terminal layouts with flexible, web-based interfaces accessible through any standard browser. Organizations can choose from multiple presentation modes, ranging from faithful emulation to fully transformed application layouts, allowing them to modernize at their own pace and in line with operational requirements. Structured menus, tabbed navigation, keyboard shortcuts, and intuitive screen flows reduce user effort and significantly shorten training time.
"From green-screen to browser in days - not months. IceCap delivers instant usability, no system rebuilds required."
Traditional workflows are further optimized by consolidating multiple green screens into streamlined, end-to-end processes. IceCap introduces interactive data entry elements such as dropdown lists, checkboxes, and date pickers, combined with validation rules that reduce errors and improve data consistency. By orchestrating multiple 5250 screens into cohesive workflows, IceCap reflects how modern business processes actually operate, allowing users to complete complex tasks faster and more accurately without modifying existing application code.
IceCap enables seamless integration between IBM i applications and modern enterprise systems. Without requiring code-level changes, organizations can connect their IBM i environment to CRM, ERP, and other business platforms, embed third-party web applications directly into workflows, or expose 5250 programs as RESTful web services for bi-directional data exchange.
IceCap inherits IBM i’s native authorization model and role-based security, ensuring that access controls and compliance requirements are preserved. Operating as a middleware layer, IceCap enhances the user interface without altering core logic or business rules, while advanced data validation mechanisms further protect data integrity.
"Keep your business logic. Drop the terminal. IceCap gives IBM i apps a modern interface, smarter workflows, and faster data entry."
At the technical level, IceCap functions as a middleware engine that intercepts the 5250 datastream, processes it, and converts it into a modern web-based JSON format. Its architecture includes several key modules that work seamlessly together:
Virtual Terminal - Emulates the 5250 interface, ensuring full compatibility with existing IBM i applications.
Emulation Engine - Converts terminal-based displays into structured JSON data.
Web Client - Renders this data as a responsive, interactive web application.
Navigation Module - Automates repetitive navigation tasks and simplifies multi-step processes.
This layered approach allows businesses to achieve modernization without rewriting or re-engineering applications.
The IceCap Engine is the core technology that powers Sitemule Workspace, providing a dedicated, high-performance modernization engine purpose-built for IBM i environments. It delivers the foundational capabilities that enable Sitemule Workspace to modernize 5250 applications quickly, safely, and at scale, without rewriting code or disrupting existing operations.
By combining interface transformation, workflow orchestration, integration enablement, and security preservation into a single engine, IceCap strengthens Sitemule Workspace as a unified platform. IceCap positions Sitemule Workspace as a future-ready foundation for continuous modernization, enabling new interfaces, workflows, and integrations while preserving the stability, governance, and reliability inherent to IBM i systems.
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