Introduction

What Open Free Max is, who it's for, and how it stays light, durable and on your subscription.

Open Free Max (OFM) is a fast, native desktop IDE that drives the official coding-agent CLIs — Claude Code, Codex, OpenCode, Gemini, Vibe and Kimi Code — interactively, from a single window, on the subscription you already pay for.

It is deliberately thin. There is no bundled Chromium and no VS Code extension host: OFM is built on Tauri, so it uses your operating system’s own WebView plus a small native Rust core. In practice that means up to 200× less RAM than Electron-based IDEs, even with several agents running at once.

What problem does it solve?

Agent CLIs are powerful but you end up juggling terminals: one window per agent, per project, losing track of what’s running, and re-typing the same approvals. OFM gives you three things on top of the CLIs you already use:

  • A real IDE — file tree, editor, terminal, and a first-class screenshot workflow.
  • Mission Control — supervise every running agent on one screen, across projects and providers.
  • Plan — hand the app one repetitive job and let a pool of agents run it to completion, autonomously, while you do something else.

Three principles

  1. On your subscription, never your API bill. OFM only ever runs the official CLI in interactive mode and refuses every programmatic path (SDK, headless -p, ACP). See Subscription vs API.
  2. Your conversations can’t be lost. OFM never owns the transcript store — it leans on each CLI’s own durable history and rebuilds its session map from disk if needed. See Session persistence.
  3. Thin and native. A small Rust shell over the official binaries — fast to launch, light on memory, honest about what it does.

Who is it for?

Developers and teams who already pay for one or more agent subscriptions and want to run them seriously — in parallel, across projects, and in bulk — without an Electron behemoth, a metered API surprise, or a lost conversation.

Next steps

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Install