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IBM Debug for z/OS

Paid#6 of 11 in Mainframe Software

IBM Debug for z/OS: A focused z/OS debugger with execution controls, language coverage and Eclipse access. Ranked #6 of 11 in Mainframe Software by our editors (8.3/10); pricing: Pricing on request; best for teams debugging and measuring z/OS application coverage.

8.3/10Editor score

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IBM Debug for z/OS8.3 Visit IBM

At a glance

Editor score
8.3 / 10
Pricing
Pricing on request
Best for
Teams debugging and measuring z/OS application coverage
Free plan
No
Facts checked
24 Sep 2026

Where it wins
- Debug COBOL, PL/I, C/C++ and Assembler applications on z/OS
- Inspect variables, registers, memory and expressions; set conditional breakpoints
- Collect, view and combine client-initiated or automated coverage results
Where it doesn't
- Narrower scope than a full development suite
- Runs on z/OS, with deployment listed as self-hosted
- Pricing is contact-sales rather than a published plan

Our verdict on IBM Debug for z/OS

IBM Debug for z/OS focuses on debugging and code coverage for applications written in COBOL, PL/I, C/C++ and Assembler. It is aimed at development teams working with z/OS workloads, including batch, CICS, IMS, Db2, z/OS UNIX and TSO environments. The product offers both a traditional 3270 interface and remote debugging through Eclipse, so it can serve teams with different mainframe debugging workflows. It is a specialized development tool rather than a full development suite.

Its debugging controls cover execution and inspection: developers can set statement, program and conditional breakpoints, run programs until a breakpoint, and monitor or change variable and storage values. The product also supports register, memory and expression inspection, as well as debugging 64-bit applications and optimized modules. Code-coverage collection can be client-initiated or automated, with options to view and combine results. These capabilities make the product relevant where teams need to diagnose program behavior and examine coverage across z/OS applications, rather than manage a broader development lifecycle.

IBM lists the product as self-hosted and running on z/OS, with Eclipse serving as its remote-debugging interface. Pricing follows a contact-sales model rather than a published plan, and support channels include documentation. Teams should consider IBM Debug for z/OS when they need detailed debugging and coverage for supported mainframe languages; organizations looking for a broader suite of development tools may prefer a different fit. Its focused feature set and Eclipse connection are the main reasons to shortlist it for z/OS debugging work.

Your product? Our editors can test IBM Debug for z/OS in depth and publish a review, labelled as paid · from $149/mo →

IBM Debug for z/OS pricing

Plans Pricing on requestPaid No free plan — trial or paid only. Prices checked 24 Sep 2026.

See plans on ibm.com

IBM Debug for z/OS fact sheet

Free plan	No
Paid from	Not verified
Deployment model	On-premises
Supported platforms	z/OS
Workload management	No
Development tools	Yes
Modernization features	Not verified
Emulation support	No
Deployment	Self-hosted
Platforms	Windows
Support	Docs
Built for	Mid-market, Enterprise (editorial estimate)
Integrations	1 integrations: Eclipse
Pricing	Pricing on request
Website	ibm.com
Facts checked	24 Sep 2026

IBM Debug for z/OS integrations

IBM Debug for z/OS lists 1 integrations on its own site.

Eclipse

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Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update