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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Open Mainframe Project the way a machine reads it — 16 machine-readable artifacts across 12 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Open Mainframe Project scores 23.6/100 (emerging), with a separate agent-readiness read of 7/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Open Mainframe Project
Each block below is one kind of artifact we hold for Open Mainframe Project. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 12
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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.
Scroll within the panel for all 12 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Open Mainframe Project Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Open Mainframe Project — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Company 3
The organization behind the API
Other 4
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/open-mainframe-project · machine-readable index on apis.io