IronMain

Mainframe tooling and emulation

Move mainframe workloads to the cloud.

Keep your investment in mainframe software. Stop tying it to expensive, dedicated hardware.

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GOFF program binaries enter IronMain’s Rust-based emulation runtime, which runs on cloud infrastructure such as EC2, Fargate, and EKS.

GOFF BINARIES → IRONMAIN RUNTIMEPROGRAM EMULATION ON CLOUD INFRASTRUCTURE

Languages, formats, and infrastructure.

  • HLASM
  • GOFF
  • JCL
  • Rust
  • AWS

01 / The platform

Assembler, runtime,
and job scheduling.

Use LSP and MCP tools to work with assembly, deploy GOFF binaries to containers, and manage JCL batch jobs.

01 / DEVELOP

Assembler

Navigate HLASM source, expand macros, and assemble GOFF binaries with LSP and MCP support.

Explore Assembler
02 / EXECUTE

Runtime

Execute z/OS GOFF binaries in a Rust-based emulation runtime, with container deployments on EC2, Fargate, and EKS.

Explore Runtime
03 / ORCHESTRATE

Scheduler

Submit JCL jobs and execute batch workloads in the cloud, with job state, logs, and return-code tracking.

Explore Scheduler

02 / How the tools work

From source code
to batch execution.

IronMain separates source tooling, binary execution, and job orchestration. Work with HLASM and GOFF, then use JCL to describe and submit batch jobs. We use formal modeling and verification to improve correctness.

  1. Navigate HLASM source.

    LSP support provides source navigation and hover documentation. Macro expansion and MCP tools support codebase migration.

  2. Deploy GOFF binaries.

    The Rust runtime supports EC2, Fargate, and EKS deployments, with an interpreter and debugger for mock and production environments.

  3. Submit and track JCL jobs.

    The scheduler validates job structure, steps, procedures, and datasets. It dispatches workloads and records job state, logs, return codes, and audit history.

YOUR SOURCEASSEMBLEEXECUTEORCHESTRATE

Discuss your workloads

Tell us your
mainframe challenges.

Let’s find practical ways to cut costs and move beyond dedicated hardware and vendor lock-in.

Contact IronMain