Install

Download and install Open Free Max on Windows or macOS, including the unsigned-build bypass and system requirements.

OFM ships as a native installer. There is no package manager, no build step and no command line required.

Download

Grab the installer for your OS from the download section:

  • Windows — .msi (standard Windows installer; clean uninstall from Settings → Apps)
  • macOS — .dmg (Apple Silicon & Intel)

System requirements

  • Windows 10/11. Optional: a WSL2 distro to open Linux projects natively (see Native WSL2).
  • macOS 10.15+ (Catalina or later), Apple Silicon or Intel.
  • The agent CLIs you want to use must be installed and logged in (Claude Code, Codex, OpenCode, Gemini, Vibe, Kimi). OFM detects them; if a CLI or its runtime (Node, Python + uv) is missing, the app shows a step-by-step installation assistant with copy-ready commands, an “open terminal” shortcut, and a re-check button — no manual PATH debugging needed.

First launch on an unsigned build

Builds are not code-signed/notarized yet, so the OS will warn the first time.

Windows / SmartScreen

Click More info → Run anyway.

macOS / Gatekeeper

Do these in order — the quarantine command only works once the app is in its final location:

  1. Move the app to Applications — drag Open Free Max IDE from the mounted .dmg into the Applications folder (don’t run it from the DMG window or Downloads).

  2. Clear the quarantine flag on the real path:

    xattr -cr "/Applications/Open Free Max IDE.app"

    If you get Operation not permitted, prefix it with sudo. If you get No such file or directory, the app isn’t where you think — locate it with mdfind -name "Open Free Max IDE.app" and use that path.

  3. Open it — double-click. If macOS still blocks it, go to System Settings → Privacy & Security, scroll to the bottom and click Open Anyway (on Sonoma/Sequoia the old right-click → Open shortcut no longer appears).

”App is damaged and can’t be opened” (Apple Silicon)

On Apple Silicon Macs an unsigned app can be reported as damaged. Clear the attributes and re-sign it ad-hoc:

sudo xattr -cr "/Applications/Open Free Max IDE.app"
sudo codesign --force --deep --sign - "/Applications/Open Free Max IDE.app"

These steps go away once the app ships with an Apple Developer ID signature and notarization — at which point it just opens with a double-click.

Next steps

Continue with the Quickstart to open a project and run your first agent.

← Previous
Introduction
Next →
Quickstart