net.sourceforge.MonolingualHelper
Monolingual is a utility for macOS that removes unnecessary language resource files (localizations) from installed applications in order to reclaim disk space. It strips unused language packs from app bundles and system frameworks, typically recovering several hundred megabytes. The app requires administrator privileges to function and uses a launchDaemon helper to perform the cleanup operations. Monolingual targets users who want to optimize storage on their Mac without removing actual functionality.
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1 suggestionMonolingual's launchDaemon helper is a component of the main Monolingual application, not a separately installed product. To address the Intel-only architecture issue, you need to update the Monolingual parent app itself. The official source is ingmarstein.github.io/Monolingual, which hosts the current build. However, Monolingual has seen no meaningful updates since version 1.7.x (circa 2015-2016) and there is no native Apple Silicon build available. The Intel-only version still launches under Rosetta 2 today, but Apple is removing Rosetta in macOS 28 (September 2028), so Monolingual will stop working entirely on that release and any subsequent macOS version. If you rely on this app, contact the maintainer through the GitHub or SourceForge project page to ask whether a native Apple Silicon build is planned before the September 2028 deadline. As an alternative, macOS itself has grown native language-management features in System Settings that may reduce the urgency of manual localization cleanup, and third-party storage optimizers like CleanMyMac X and AppCleaner now run natively on Apple Silicon if you need similar functionality going forward.
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