Open Mainframe Project Redefines Developer Experience on the Mainframe with AI and Open Source Community
New Projects Zorse and zopen community Aim to Boost Productivity for Mainframers
LAS VEGAS, Nevada — IBM TechXchange — October 21, 2024 – The Open Mainframe Project (https://www.openmainframeproject.org/), an open source initiative that enables collaboration across the mainframe community to develop shared tool sets and resources, today announces two new projects that will redefine developer experience on the mainframe. Zorse (https://openmainframeproject.org/projects/zorse/) is a new open source project that will provide the resources to train and evaluate large language models (LLMs) for mainframe programming languages. The zopen community is a vibrant global open source community that works together to expand the availability and development of open source tools for z/OS, making it a first-class modern platform.
Zorse
Specifically with mainframes, LLMs perform comparatively poorly at reading and writing mainframe code because there is very little data for them to train on. Zorse aims to solve these challenges by collecting large, production-quality datasets to improve LLM’s ability to understand and write mainframe code. The new project will also provide an evaluation tool to measure the performance of LLMs on mainframe programming tasks. Ultimately, this will help build Artificial Intelligence (AI) coding tools that will boost the productivity of mainframe software engineers.
“AI is revolutionizing how organizations utilize mainframes by enabling real-time optimization, predictive maintenance, and enhanced data analytics,” said John Mertic, Executive Director of Open Mainframe Project. “Now under our umbrella, Zorse is the perfect complementary project to the COBOL Programming Course and COBOL Check. Together, our projects will offer an opportunity to blend education and practical testing for modernizing and maintaining legacy systems.”
The zopen community
Newly contributed to the Open Mainframe Project, the zopen community is a global community dedicated to making a modern collection of popular open source tools available for z/OS. They aim to make the platform more accessible to modern developers and organizations embracing open source technology. With more than 200 projects and a thriving ecosystem, it will shape the future of z/OS UNIX development.
The zopen community accelerates modernization efforts on the mainframe, making it easier for companies to adapt z/OS to the latest development standards, especially with the growing adoption of DevOps and CI/CD pipelines. This community also helps reduce the learning curve and complexity of z/OS environments by providing ready-to-use, familiar open source tools, improving developer productivity and enabling faster deployments.
"The zopen community is focused on driving z/OS to the forefront of open source by empowering users to contribute, collaborate, and collectively shape its future, making it a more modern platform for everyone,” said Igor Todorovski, Chair of the zopen community and z/OS Open Source Development Lead at IBM. “Joining the Open Mainframe Project allows us to offer these resources to a broader open source ecosystem that will strengthen the developer experience.”
For more about Open Mainframe Project, visit https://www.openmainframeproject.org/.
About the Open Mainframe Project
The Open Mainframe Project is intended to serve as a focal point for deployment and use of Linux and Open Source in a mainframe computing environment. With a vision of Open Source on the Mainframe as the standard for enterprise class systems and applications, the project’s mission is to build community and adoption of Open Source on the mainframe by eliminating barriers to Open Source adoption on the mainframe, demonstrating value of the mainframe on technical and business levels, and strengthening collaboration points and resources for the community to thrive. Learn more about the project at https://www.openmainframeproject.org.
About The Linux Foundation
The Linux Foundation is the world’s leading home for collaboration on open source software, hardware, standards, and data. Linux Foundation projects are critical to the world’s infrastructure including Linux, Kubernetes, Node.js, ONAP, OpenChain, OpenSSF, PyTorch, RISC-V, SPDX, Zephyr, and more. The Linux Foundation focuses on leveraging best practices and addressing the needs of contributors, users, and solution providers to create sustainable models for open collaboration. For more information, please visit us at linuxfoundation.org.
The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see its trademark usage page: www.linuxfoundation.org/trademark-usage. Linux is a registered trademark of Linus Torvalds.

Modernising z/OS is like eggy car! Like giant eggs atop small cars, mainframes are hefty and cumbersome. Without reliable support tools, a DevOps or CI/CD mistake might be disastrous. Zorse's AI and the zopen community ecosystem give developers a great shock absorber mechanism to protect the "egg" of company data while the car accelerates its digital transformation. A promising mix!
The integration of AI and open-source collaboration into mainframe development is an exciting step forward. By improving the developer experience, the Open Mainframe Project is helping organizations modernize legacy systems while making them more accessible to new generations of developers.
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