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Good software reaches further with the right partners. Whether you want to build on our technology, sell our solutions, or simply open doors for the customers you already work with - there is a level of partnership built for you.

Founded in 1989, System & Method A/S is a Danish software company built on a simple philosophy: technology should empower people, not replace them. For more than three decades, we have helped hundreds of organizations modernize and extend the value of their IBM i platforms - without unnecessary complexity, disruption, or costly redevelopment.
We modernized ourselves the same way we modernize our customers. That's Sitemule.
Since the 1990s, we have filled the gaps in the IBM i. It began with BlueNote and BlueSeries - keeping systems monitored and business communication flowing: fax, email, FTP, XML invoicing, and SMS messaging.
When the 2000s demanded modernization, we built the bridge. IceBreak brought web applications and services natively to the IBM i. IceCap transformed green screens into modern user interfaces. No middleware. No replacement projects. In 2009, we opened our own hosting center, so the same team that builds the software could also operate the hardware.
Today, our four trusted products run at hundreds of companies worldwide - and they have taken the next step: reborn as the four high-performance engines powering Sitemule, our complete modernization ecosystem, running natively on IBM i. Our hosting service has taken the same step, reborn as Sitemule Cloud. And nothing our customers rely on goes away: IceBreak, IceCap, BlueSeries, and BlueNote remain separately installed products, fully maintained and supported - exactly as you know them today.
Our focus is on enabling businesses to move forward while preserving the strength of their existing applications and processes. Rather than replacing proven systems, we help companies unlock new value from their current RPG, COBOL, and CL applications - the same conservative principle that runs through everything we build: change the interface, not the application. Keep the business logic where it has always lived: on IBM i.
That principle takes shape across the Sitemule platform:
Web applications and services - the IceBreak engine serves modern web applications, microservices, and APIs directly from RPG and COBOL, with no middleware and no rewrites.
Modern user interfaces - the IceCap engine transforms 5250 green screens into responsive, browser-based experiences and orchestrates them into entirely new workflows.
Business communication - the BlueSeries engine drives every channel natively from IBM i: email, SMS, FTP, fax, XML invoicing and document exchange.
Monitoring and resilience - the BlueNote engine watches every job, message, and subsystem in real time, with automated recovery and alerts straight to your phone - and keeps the Sitemule platform itself running.
Managed hosting - Sitemule Cloud provides secure, scalable, zero-downtime hosting, monitored around the clock and powered by renewable energy, from the same people who built the software.
Alongside the platform, we also provide practical standalone tools, such as ZipSeries, for secure object handling and distribution, with full IBM i object security intact.
More than 30 years of experience with IBM i modernization
Native IBM i solutions with no middleware required
Preserve existing RPG, COBOL, and CL business logic - nothing you rely on goes away
Modern web interfaces built directly on top of your proven applications
Integrated communication solutions, from SMS, email, and FTP to XML invoicing
Real-time IBM i monitoring, alerting, and automated recovery
Secure object transfer and handling with full object security intact
Professional hosting focused on security, scalability, and sustainability
One platform - Sitemule - uniting it all in a browser-based Workspace, running natively on your IBM i
A Danish software company with a long-standing commitment to quality and customer trust
At System & Method A/S, we combine deep technical expertise with a strong understanding of business continuity. Our goal is to help you modernize with confidence - protecting existing investments while preparing for future demands. Your proven systems, modernized - not discarded.
A realistic, scalable modernization path for the IBM i is closer than you think - and as an existing customer, you're already halfway there.
→ Explore the platform at Sitemule.com
→ Contact us today for a special upgrade offer reserved for existing customers.
System & Method A/S was founded in 1989 in Denmark. Our software is presented today under Sitemule - a platform that modernizes IBM i and brings a web-centric approach to the business applications running on it. All our software is developed specifically for IBM's midrange platform lineage - AS/400, iSeries, i5, System i, and Power Systems - and the operating systems that have run on it: OS/400, i5/OS, and IBM i.

Good software reaches further with the right partners. Whether you want to build on our technology, sell our solutions, or simply open doors for the customers you already work with - there is a level of partnership built for you.