Mainframe application development and testing on Intel hardware

IBM® Rational® Development and Test Environment for z Systems® provides an environment for mainframe application demonstration, development, testing, and employee education. It enables z/OS, middleware and other z/OS software to run on Intel and Intel-compatible platforms without the need for z Systems mainframe hardware. It is based on the IBM System z Personal Development Tool (zPDT), which provides an emulated z Systems architecture with virtual I/O and devices.

Rational Development and Test Environment for z Systems provides:

Application development and testing environment

Mixed workload support

High fidelity development and test environment

Current levels of the IBM z/OS middleware

System z education environment

Note: Rational Development and Test Environment for z Systems can only be used for development, testing, employee education, or demonstration of applications that run on z/OS. It may not be used for production workloads of any kind, nor for robust development workloads, including without limitation, production module builds, pre-production testing, stress testing, or performance testing.


Enterprise DevOps Trial in the Cloud

A complete solution to accelerate the development of applications that include System z components. The trial is a free, cloud-based, hands-on environment that allows you to develop and test z/OS applications in a guided "tinker, test, and try" sandbox environment.

IBM Rational Development and Test Environment for z Systems resources

Always up-to-date system requirement reports can be dynamically generated using the Software Product Compatibility Reports (SPCR) tool.

For your convenience, the tabs below identify the supported releases of Rational Development and Test Environment for z Systems from which you can select detailed system requirement reports for different contexts (by Operating System, by component). Note that clicking a link will always generate a new, up-to-date report.

Tab navigation

9.5 Release



9.1 Release



9.0 Release



IBM RD&T 9.5 delivers improved mainframe compatibility and newer z/OS software and middleware for more comprehensive development and test coverage:

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