Fresche Solutions


IBM i (AS/400) Green Screen UI Modernization

Give Your IBM i Green Screens a Modern Web GUI That’s Accessible from Any Device

Presto is the fastest way to give your IBM i green screens and new RPG programs a modern web GUI using the 5250 datastream, APIs or RPG Open Access. It also gives you endless opportunities to add new functionality.

What You Can Do With Presto

Strategic Web Apps

Modern Web GUI

Keep your IBM i relevant in the eyes of end users and management by giving your existing green screens and new RPG programs a web GUI.

New Functionality

Increase productivity by adding drop down boxes, tabs, datepickers, images, charts and more to your web-enabled screens.
Mobile Web Apps

Mobile Access

Access all of your modernized IBM I green screens internally or remotely from iPads, iPhones, and other tablets and smartphones.

A look at Presto

See how Presto gives your IBM i green screens a modern UI
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How Presto Can Help You:

Intuitive Web GUI

Presto transforms your green screens into modern, intuitive web pages that increase user satisfaction and reduce training costs.

Immediate Results

Your existing green screens are instantly accessible as modern web pages without requiring changes to your source code.

Easy Deployment and Access

Users only need a browser to access the web-enabled screens internally or remotely from desktops or mobile devices.

End User Productivity

Improve workflows by enhancing screens with tabs, drop downs, autocompletes, datepickers and more without coding HTML.

Leverage and Future-Proof IBM i

Leverage existing applications to meet current business needs while providing the agility to take advantage of future technologies, such as AI.

RESTful APIs and Web Services

Provide a more seamless end user experience by using APIs / Web Services to integrate with additional web applications and data sources.


Presto is a game changer. Out of the box, Presto converted our existing applications and OS screens into web applications that we can use on mobile devices, all without requiring us to change any code. I’m a 25+ year IBM i (RPG) developer but learning this tool was simple with a minimal learning curve. In my opinion, Presto should be shipped with every IBM i sold

Gene Schumacher,
  J.R. Simplot

Key Technical Features

Out of the Box Rendering

  • On-the-fly HTML rendering – no source needed
  • Auto detects subfiles, function keys and more
  • Customizable skins and other global settings

Visual Editor

  • Add date pickers, images, tabs and more
  • Include links to PDF, Excel and other files
  • Use SQL for charts, autocompletes and drop downs


  • Heat map of IBM i application usage
  • Visually shows how users spend time in applications
  • Helps you priortize application modernization needs

Mobile, Portals and Beyond

  • Responsive screens optimized for desktop/mobile
  • Optional Nexus Portal for secure, menu-based access
  • Integrate with other web apps using links and APIs

eBook: The Business Case for IBM I Green Screen UI Modernization

Learn how IBM i web and mobile applications add value to your organization by driving revenue, increasing competitive advantage and delighting end users
Download the ebook