Education & Learning
MainframeMaster
Free tutorials and resources for COBOL and mainframe technologies
A free learning site offering practical tutorials for COBOL, JCL, CICS, DB2, VSAM, IBM MQ, DFSORT, Easytrieve, and TSO/ISPF mainframe technologies.
The story
MainframeMaster is a free learning platform dedicated to preserving and sharing mainframe knowledge. As experienced mainframe professionals retire, critical knowledge and skills are at risk of being lost. The platform aims to preserve this knowledge and make it accessible to newcomers entering the field.
The site offers comprehensive tutorials covering mainframe technologies including COBOL, JCL, CICS, DB2, VSAM, IBM MQ, DFSORT, Easytrieve, and TSO/ISPF. Each tutorial is designed with practical examples and step-by-step guides to help learners build real-world skills. The platform provides interactive learning with progress tracking and practical challenges to reinforce concepts.
MainframeMaster helps maintain the continuity of mainframe expertise that powers critical systems in banking, insurance, healthcare, government, and other industries. The platform also provides guidance on integrating mainframe systems with modern technologies like cloud, APIs, and DevOps practices.
Product features
- Comprehensive COBOL tutorials covering basic syntax to advanced techniques
- Step-by-step guides for JCL, COBOL, CICS, DB2, and z/OS concepts
- Progress tracking and practical challenges
- DB2 and VSAM data storage technologies
- Community forum for mainframe learners
- Quick reference guides and cheat sheets
- Interview questions and glossary resources
- Mainframe and COBOL job board
Pricing
Pricing model: Free
MainframeMaster metrics
Test results for mainframemaster.com: Ahrefs Domain Rating and Majestic link data, with the change since the last test run.
- Domain Rating
- 11
- no change since last check
- Trust Flow
- 7
- no change since last check
- Citation Flow
- 28
- no change since last check
- Referring domains
- 47
- no change since last check
- External backlinks
- 155
- no change since last check
Ahrefs Domain Rating tested 28 Oct 2026, retested with a change 25 Oct 2026. Product topic: Business/Construction and Maintenance (6). Majestic tested 25 Oct 2026, retested with a change 25 Oct 2026. Majestic tests the link data. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
MainframeMaster domain specs
Show the domain specs
Source: the public RDAP record, checked 25 Oct 2026, 18:03 UTC.
- Domain age
- 1 year
- Registered
- Expires
- Registrar
- Name.com, Inc.
- DNSSEC
- Not signed
Questions and answers
What technologies does MainframeMaster cover?
MainframeMaster publishes free tutorials for COBOL, JCL, CICS, DB2, VSAM, IBM MQ, DFSORT, Easytrieve, and TSO/ISPF. The tutorials are designed to teach practical skills for beginners and career changers.
Why should I learn mainframe technologies?
Mainframe systems power critical infrastructure in banking, insurance, government, and other industries. As experienced mainframe professionals retire, organizations are actively seeking new talent, and mainframe specialists often command higher salaries due to the specialized nature of their skills.
What type of learning resources are available?
MainframeMaster offers comprehensive tutorials, quick reference guides, interactive learning with progress tracking and exercises, practical challenges, interview questions, glossaries, a community forum, and a job board for mainframe and COBOL positions.
How can I contact MainframeMaster with questions or suggestions?
You can email contact@mainframemaster.com for content errors, missing topics, partnership inquiries, and account questions. The team reads every message and usually replies within a few business days. For faster answers on tutorial concepts, posting in the forum often gets responses from other learners.
What is MainframeMaster's mission?
MainframeMaster aims to bridge the knowledge gap in mainframe technologies by preserving and sharing mainframe knowledge as experienced professionals retire. The platform helps maintain the continuity of mainframe expertise that powers critical systems in banking, insurance, healthcare, government, and other industries.
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