Monolingual

The program scans a macOS installation and lists language‑specific resources such as localization files, dictionaries, and voice packs that are not needed for the user’s primary language. By selecting and deleting these items, it frees several hundred megabytes of disk space, allowing the system to retain only the language data that matches the user’s preferences.

It is aimed at macOS users who run a single language environment and want to reclaim storage without affecting core functionality. The utility supports 64‑bit Intel‑based Macs and requires macOS 10.13 or later; older macOS versions are supported by legacy releases listed in the documentation.

The tool provides a straightforward graphical interface for reviewing and removing unwanted language assets, and it has been maintained as a stable utility across multiple macOS releases. It does not modify system binaries beyond the language resources it targets.