Open-source alternatives to AppCleaner

AppCleaner removes an app together with the files it has spread across the system, such as preferences, caches and support folders. You drop an app onto its window, check the list of related files and delete them in one step.

The apps below do the same job: they look for an app's associated files across the Library folders and list them before anything is removed. Pearcleaner and Peel are dedicated uninstallers that can also find remnants of apps you already deleted, with Peel explaining why each file matched, while PureMac, Mac Sai and MangoDisk include a comparable uninstaller inside a broader cleanup app. All of them publish their source code.