AppCleaner vs O&O AppBuster

AppCleaner is a free macOS utility for uninstalling unwanted applications and finding the files they leave behind. Drag an app into its window to see related files distributed across the system, review the list, and choose what to delete. Version 3.7 improves searches in Application Scripts and asks for Full Disk Access; without that permission, some files may remain. It can locate files associated with system apps, but cannot remove those apps. Downloads cover several macOS generations: version 3.7 for macOS 15 and later, 3.6.8 for macOS 10.14 up to 15.6, 3.6 for macOS 10.13, and 3.4 for macOS 10.10 up to 10.12. Version 3.6 added native Apple M1 support. AppCleaner can detect applications inside disk images and offer to remove the image file instead. Its login item appears in System Settings, and a preference can hide protected apps. The download page also notes a Sparkle updater security fix in version 3.7 and HTTPS updates since version 3.2.

O&O AppBuster is a free Windows utility for managing and removing apps. Its listed functions include batch uninstalling, forced removal, and scanning for leftover items. A portable version is available, and no installation is required. The plan is described as freeware with no paid edition or trial period. Other listed capabilities include backup, recovery, drive optimization, and wiping. Optimization can be scheduled, run automatically, or performed at boot; shredding can also be scheduled, and free-space wiping and certified overwrite methods are listed. Recovery sources include hard drives, partitions, SSDs, memory cards, USB sticks, and digital cameras. File preview and bootable recovery are also listed. Compatibility details differ between the supplied Windows lists: one names Windows 7–10 and several Windows Server versions, while another lists Windows 10 and 11. Confirm support for the Windows version in use rather than assuming the lists describe the same range. Install monitoring and junk cleanup are specifically marked unavailable. The supplied facts also list a paid-from figure of 49.95 one-time, although the AppBuster plan itself is described as having no paid edition.