Galasa review
A flexible z/OS integration-testing framework for teams comfortable with Java and self-hosting.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Galasa is an open-source framework for writing and running automated tests against mainframe and connected systems. It is aimed at teams that need z/OS integration coverage and can work with Java test projects. Developers use Managers to interact with services including z/OS files, batch jobs, commands, CICS Transaction Server and Db2. Gherkin-based tests and 3270 terminal interaction steps extend its reach beyond service-level checks, making it relevant for integration, regression and system verification work.
Execution can happen locally or in a shared Galasa Ecosystem. The ecosystem centralizes configuration, results, logs and test artifacts, and supports parallel test runs; its deployment is Kubernetes-based. That provides a route from individual development to shared team execution, while GitHub, JMeter and Selenium are among its listed integrations. Teams can also integrate test execution into DevOps pipelines. This makes Galasa a fit for organizations connecting mainframe testing with broader delivery workflows, though ecosystem operation adds infrastructure considerations compared with local runs.
Galasa is distributed as an open-source project rather than a priced hosted subscription, so teams should weigh adoption around engineering capacity and operating needs rather than subscription tiers. Documentation and community are its support channels. Choose it when open-source control, mainframe-specific managers and automated pipeline runs matter, and the team is prepared to own Java-based test development and deployment. A team looking for a managed service, a low-code authoring experience or vendor-led support should consider alternatives instead.
Galasa pros and cons
- Where it wins
- Automates z/OS file, batch, CICS and Db2 interactions
- Runs locally or in a shared ecosystem with parallel execution
- Supports Gherkin tests and DevOps pipeline integration
- Where it doesn't
- Java test projects require developer involvement
- Shared ecosystem deployment depends on Kubernetes
- Support is centered on documentation and community
Galasa fact sheet, pricing and score →
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