Go64
Go64 is a Mac utility that scans your applications for 32-bit code and helps you identify software that will not run on newer macOS versions.
What is Go64?
Go64 is a native Mac utility from St. Clair Software designed to help users find applications that still contain 32-bit code. It scans installed software and highlights apps, plug-ins, frameworks, and related components that may stop working on macOS versions newer than Mojave. The app is especially useful when preparing an older Mac for a system upgrade or when reviewing legacy software compatibility. Go64 also helps users investigate problem items by linking to developer information and providing more detail than the built-in System Information report alone. Its focus is compatibility checking rather than general maintenance, so it is best suited to users managing older app collections, specialty tools, or long-lived Mac setups.
Key features
- Scan installed applications for 32-bit code
- Identify apps that will not run on macOS versions after Mojave
- Check for 32-bit plug-ins, frameworks, and related components
- Open developer links to look for newer compatible versions
- Review compatibility details in a simpler list than System Information
- Help plan app updates before a macOS upgrade
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Safe
Go64 is a legitimate compatibility utility for macOS. Its disk scanning behavior is consistent with its purpose because it needs to inspect installed applications and related components to report 32-bit code. Review any links it opens before downloading replacement software, and use the app as an information tool rather than as the final authority on whether a specific workflow will still function after a macOS upgrade.
Recommendation: Keep Go64 if you maintain older Mac software or want to check legacy app compatibility before upgrading macOS. If you no longer use it and do not need 32-bit compatibility checks, removing it should only affect your ability to run these scans.
Common paths
/Applications/Go64.app
Preference paths
~/Library/Preferences/com.stclairsoft.Go64.plist
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