yo
yo is a free, open-source notification utility for macOS that allows users to send themselves system notifications from the command line or scripts. It was created by developer Shea Craig and distributed via GitHub. The app is used by system administrators, developers, and automation enthusiasts who want to trigger desktop alerts programmatically — for example, to notify themselves when a long-running process completes, a backup finishes, or a system event occurs. Notifications appear in the macOS Notification Center and can be customised with titles, subtitles, and sounds.
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1 suggestionThe GitHub repository for yo appears not to have received updates in recent years, and there is no clear evidence of a native Apple Silicon build being available. The app currently runs under Rosetta 2 on Apple Silicon Macs, but Apple is removing Rosetta 2 in macOS 28 (September 2028), so this Intel-only build will stop working on that release. If you use yo regularly, contact the developer through the GitHub repository to ask whether a native Apple Silicon build is planned. As a free alternative with confirmed native Apple Silicon support, consider using simple shell scripts with the standard macOS `osascript` command to trigger notifications, or explore tools like terminal-notifier (a maintained, open-source tool that runs natively on Apple Silicon and offers similar command-line notification capabilities).
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