Open Mainframe Project website screenshot

Open Mainframe Project

The Open Mainframe Project is a Linux Foundation project encouraging the use of Linux-based operating systems and open source software on mainframe computers. Founded in 2015 with IBM, it hosts projects such as Zowe (modern interfaces for z/OS), Feilong (z/VM cloud connector), Galasa (testing), and a range of community programs that promote mainframe skills and open source on IBM Z and LinuxONE platforms.

12 APIs 0 Features
Cloud NativeEducationEnterpriseIBM ZLinux FoundationLinux on ZMainframeOpen Sourcez/OSz/VM

APIs

Zowe

Zowe is an open source software framework that delivers modern interfaces to interact with z/OS, including a CLI, a web UI (Application Framework), and REST APIs (API Mediation ...

Feilong

Feilong is an open source z/VM cloud connector that exposes z/VM functions as REST APIs to accelerate z/VM adoption and enable integration with modern cloud automation tooling.

Galasa

Galasa is an open source deep integration test framework able to run tests across z/OS, distributed systems, and cloud platforms, with REST APIs for managing test runs and resou...

Tessia

Tessia automates the installation, configuration, and testing of Linux systems running on the IBM Z platform, exposing a REST API for managing systems, networks, and provisionin...

GenevaERS

GenevaERS is a single-pass optimization engine for high-volume data extraction, transformation, and reporting on z/OS, used to consolidate large-scale mainframe analytics worklo...

COBOL Check

COBOL Check is a unit testing framework for COBOL that enables test-driven development for mainframe code with assertion-based tests runnable from CI pipelines.

zopen Community

zopen is a community-driven catalog and build framework that ports and packages popular open source tools for z/OS, expanding the open source tool surface available to mainframe...

Ambitus

Ambitus fosters a community focused on educating developers about open source technologies running on z/OS and Linux on Z, including curated tutorials and learning paths.

CBT Tape

CBT Tape is a long-running open library of free software distributions for IBM mainframe MVS, OS/390, and z/OS environments.

COBOL Programming Course

An open educational initiative offering structured COBOL learning materials alongside contemporary tooling such as VS Code, Zowe CLI, and Git for modern mainframe development wo...

Software Discovery Tool

Software Discovery Tool helps match developer requirements with available open source software tested on the IBM Z platform.

Mainframe Open Education

Mainframe Open Education is a community for newcomers and experienced mainframe practitioners, sharing learning resources, mentoring guidance, and skills programs.

Pricing Plans

Rate Limits

Open Mainframe Project Rate Limits

5 limits

RATE LIMITS

FinOps

Resources

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LinkedIn
LinkedIn
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Website
Website
🔗
All Projects
All Projects
🔗
Documentation
Documentation
👥
GitHubOrganization
GitHubOrganization
📰
Blog
Blog
🔗
Events
Events
🔗
Membership
Membership
🔗
Linux Foundation
Linux Foundation

Sources

apis.yml Raw ↑
aid: open-mainframe-project
name: Open Mainframe Project
description: The Open Mainframe Project is a Linux Foundation project encouraging the use of Linux-based operating systems
  and open source software on mainframe computers. Founded in 2015 with IBM, it hosts projects such as Zowe (modern interfaces
  for z/OS), Feilong (z/VM cloud connector), Galasa (testing), and a range of community programs that promote mainframe skills
  and open source on IBM Z and LinuxONE platforms.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Cloud Native
- Education
- Enterprise
- IBM Z
- Linux Foundation
- Linux on Z
- Mainframe
- Open Source
- z/OS
- z/VM
created: '2026-03-16'
modified: '2026-04-28'
url: https://raw.githubusercontent.com/api-evangelist/open-mainframe-project/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: open-mainframe-project:zowe
  name: Zowe
  description: Zowe is an open source software framework that delivers modern interfaces to interact with z/OS, including
    a CLI, a web UI (Application Framework), and REST APIs (API Mediation Layer) for jobs, datasets, USS files, and system
    management.
  humanURL: https://www.zowe.org/
  tags:
  - API Mediation
  - CLI
  - Mainframe
  - REST APIs
  - z/OS
  properties:
  - type: Documentation
    url: https://docs.zowe.org/
  - type: GitHubOrganization
    url: https://github.com/zowe
- aid: open-mainframe-project:feilong
  name: Feilong
  description: Feilong is an open source z/VM cloud connector that exposes z/VM functions as REST APIs to accelerate z/VM
    adoption and enable integration with modern cloud automation tooling.
  humanURL: https://www.openmainframeproject.org/projects/feilong
  tags:
  - Cloud Connector
  - REST APIs
  - z/VM
  properties:
  - type: Documentation
    url: https://cloudlib4zvm.readthedocs.io/
  - type: GitHubRepository
    url: https://github.com/openmainframeproject/feilong
- aid: open-mainframe-project:galasa
  name: Galasa
  description: Galasa is an open source deep integration test framework able to run tests across z/OS, distributed systems,
    and cloud platforms, with REST APIs for managing test runs and resources.
  humanURL: https://galasa.dev/
  tags:
  - Integration Testing
  - Mainframe
  - Test Automation
  properties:
  - type: Documentation
    url: https://galasa.dev/docs/
  - type: GitHubOrganization
    url: https://github.com/galasa-dev
- aid: open-mainframe-project:tessia
  name: Tessia
  description: Tessia automates the installation, configuration, and testing of Linux systems running on the IBM Z platform,
    exposing a REST API for managing systems, networks, and provisioning workflows.
  humanURL: https://gitlab.com/tessia-project
  tags:
  - Automation
  - Linux on Z
  - Provisioning
  properties:
  - type: Documentation
    url: https://gitlab.com/tessia-project/tessia/-/blob/master/README.md
  - type: GitLab Repository
    url: https://gitlab.com/tessia-project/tessia
- aid: open-mainframe-project:genevaers
  name: GenevaERS
  description: GenevaERS is a single-pass optimization engine for high-volume data extraction, transformation, and reporting
    on z/OS, used to consolidate large-scale mainframe analytics workloads.
  humanURL: https://www.openmainframeproject.org/projects/genevaers
  tags:
  - Analytics
  - Data Extraction
  - z/OS
  properties:
  - type: Documentation
    url: https://genevaers.org/
  - type: GitHubOrganization
    url: https://github.com/genevaers
- aid: open-mainframe-project:cobol-check
  name: COBOL Check
  description: COBOL Check is a unit testing framework for COBOL that enables test-driven development for mainframe code with
    assertion-based tests runnable from CI pipelines.
  humanURL: https://www.openmainframeproject.org/projects/cobol-check
  tags:
  - COBOL
  - Testing
  - TDD
  properties:
  - type: GitHubRepository
    url: https://github.com/openmainframeproject/cobol-check
- aid: open-mainframe-project:zopen-community
  name: zopen Community
  description: zopen is a community-driven catalog and build framework that ports and packages popular open source tools for
    z/OS, expanding the open source tool surface available to mainframe developers.
  humanURL: https://zopen.community/
  tags:
  - Open Source
  - Package Management
  - z/OS
  properties:
  - type: Documentation
    url: https://zopen.community/
  - type: GitHubOrganization
    url: https://github.com/zopencommunity
- aid: open-mainframe-project:ambitus
  name: Ambitus
  description: Ambitus fosters a community focused on educating developers about open source technologies running on z/OS
    and Linux on Z, including curated tutorials and learning paths.
  humanURL: https://www.openmainframeproject.org/projects/ambitus
  tags:
  - Community
  - Education
  - Linux on Z
  - z/OS
  properties:
  - type: GitHubOrganization
    url: https://github.com/ambitus
- aid: open-mainframe-project:cbt-tape
  name: CBT Tape
  description: CBT Tape is a long-running open library of free software distributions for IBM mainframe MVS, OS/390, and z/OS
    environments.
  humanURL: https://www.cbttape.org/
  tags:
  - Mainframe
  - MVS
  - Software Library
  - z/OS
  properties:
  - type: Documentation
    url: https://www.cbttape.org/
- aid: open-mainframe-project:cobol-programming-course
  name: COBOL Programming Course
  description: An open educational initiative offering structured COBOL learning materials alongside contemporary tooling
    such as VS Code, Zowe CLI, and Git for modern mainframe development workflows.
  humanURL: https://github.com/openmainframeproject/cobol-programming-course
  tags:
  - COBOL
  - Education
  - Training
  properties:
  - type: GitHubRepository
    url: https://github.com/openmainframeproject/cobol-programming-course
- aid: open-mainframe-project:software-discovery-tool
  name: Software Discovery Tool
  description: Software Discovery Tool helps match developer requirements with available open source software tested on the
    IBM Z platform.
  humanURL: https://www.openmainframeproject.org/projects/software-discovery-tool
  tags:
  - Discovery
  - IBM Z
  - Open Source
  properties:
  - type: GitHubRepository
    url: https://github.com/openmainframeproject/software-discovery-tool
- aid: open-mainframe-project:mainframe-open-education
  name: Mainframe Open Education
  description: Mainframe Open Education is a community for newcomers and experienced mainframe practitioners, sharing learning
    resources, mentoring guidance, and skills programs.
  humanURL: https://www.openmainframeproject.org/projects/mainframe-open-education
  tags:
  - Community
  - Education
  - Mentorship
  properties:
  - type: Documentation
    url: https://www.openmainframeproject.org/projects/mainframe-open-education
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/the-open-mainframe-project
- type: Website
  url: https://www.openmainframeproject.org/
- type: All Projects
  url: https://www.openmainframeproject.org/all-projects
- type: Documentation
  url: https://www.openmainframeproject.org/projects
- type: GitHubOrganization
  url: https://github.com/openmainframeproject
- type: Blog
  url: https://www.openmainframeproject.org/blog
- type: Events
  url: https://www.openmainframeproject.org/events
- type: Membership
  url: https://www.openmainframeproject.org/about/members
- type: Linux Foundation
  url: https://www.linuxfoundation.org/projects/open-mainframe/
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com