macUSB

macUSB is a guided macOS application that creates bootable USB installers for macOS and OS X on both Apple Silicon and Intel Macs. It accepts installer sources in several formats—including .dmg, .iso, .cdr, and .app files—or can retrieve the appropriate installer directly from Apple’s servers via its built‑in downloader. The tool automates the preparation of the USB media, handling partitioning, formatting, and any required conversion steps, while also providing legacy support for older macOS versions and PowerPC‑era installers.

The intended users are administrators, technicians, and developers who need to produce reliable bootable macOS media, especially when dealing with legacy installers that often encounter signing or compatibility issues on newer hardware. macUSB streamlines the process into a single, step‑by‑step workflow, reducing the need for manual terminal commands and minimizing configuration errors.

Distinctive aspects include automatic compatibility handling for older macOS releases on Apple Silicon, dedicated support for Tiger/Leopard‑era installers, and a user‑friendly UI that guides the user from source selection through to completion. The application is open source, MIT‑licensed, notarized for macOS, and remains free for all users.