Head-to-head · Mainframe Testing Tools
IBM Workload Simulator for z/OS and OS/390 vs Infotel Application Parallel Testing
Our verdict
- Highest scoreIBM Workload Simulator for z/OS and OS/390 · 7.8/10
IBM Workload Simulator for z/OS and OS/390 scores higher on our rubric for mainframe testing tools: 7.8 against 6.7 out of 10; our editors rank them #4 and #6.
IBM Workload Simulator for z/OS and OS/390 is the better fit for enterprise teams simulating z/OS and OS/390 workloads. Infotel Application Parallel Testing is the better fit for teams comparing mainframe application changes.
- IBM Workload Simulator for z/OS and OS/390 fits best
Enterprise teams simulating z/OS and OS/390 workloads
- Infotel Application Parallel Testing fits best
Teams comparing mainframe application changes
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Side by side
| Feature | IBM Workload Simulator for z/OS and OS/390 7.8/10 Visit ↗ | Infotel Application Parallel Testing 6.7/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.8 | 6.7 |
| Ranking | #4 in Mainframe Testing Tools | #6 in Mainframe Testing Tools |
| Best for | Enterprise teams simulating z/OS and OS/390 workloads | Teams comparing mainframe application changes |
| Pricing model | Paid | Paid |
| Starting price | Pricing on request | Pricing on request |
| Free plan | Not checked yet | Not checked yet |
| Free trial | — | — |
| Built for | Enterprise | Mid-market, Enterprise |
| Features IBM Workload Simulator for z/OS and OS/390 0/2 · Infotel Application Parallel Testing 0/2 | ||
| Test data support | Not checked yet | Not checked yet |
| CI/CD integration | Not checked yet | Not checked yet |
| Specs | ||
| Test types | workload simulation | Not checked yet |
| Mainframe platforms | z/OS, OS/390 | Not checked yet |
| Automation level | Not checked yet | Not checked yet |
| Deployment options | On-premises | Not checked yet |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | For enterprise teams preparing applications for IBM mainframe environments, IBM Workload Simulator for z/OS and OS/390 generates test workloads and simulates workloads on z/OS and OS/390. Its scope is specific: evaluating application… Read the review → |
Infotel Application Parallel Testing is a dedicated testing product from Infotel Software for organizations working with mainframe applications. Its stated focus is parallel testing of application changes, making it relevant to mid-market… Read the review → |
Strengths and trade-offs
IBM Workload Simulator for z/OS and OS/390 — where it wins
- Generates mainframe test workloads for application testing.
- Supports workload simulation in z/OS environments.
- Supports workloads for OS/390.
Where it doesn't
- Focused on workload simulation rather than broader test capabilities.
- Self-hosted deployment is the listed option.
- Pricing is handled through contact with sales.
Infotel Application Parallel Testing — where it wins
- Focused on parallel testing of application changes
- Dedicated to mainframe application testing
- Aimed at mid-market and enterprise organizations
Where it doesn't
- Pricing is contact-sales
- Technical specifications are limited
- Not presented as a general-purpose test framework
- IBM Workload Simulator for z/OS and OS/3907.8/10 · Pricing on request
A focused workload simulator for teams testing applications on z/OS and OS/390.
Visit IBMFull verdict → - Infotel Application Parallel Testing6.7/10 · Pricing on request
A focused option for teams validating mainframe application changes in parallel.
Contact InfotelFull verdict →
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- Rocket SmartTest vs IBM Workload Simulator for z/OS and OS/390
- Rocket SmartTest vs Infotel Application Parallel Testing
- IBM Workload Simulator for z/OS and OS/390 vs Galasa
- IBM Workload Simulator for z/OS and OS/390 vs ACCELQ
All mainframe testing tools comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update



