Since version 1.2.0 (released Oct 2021), UninstallPKG is completely free to use, supported by showing information about other apps from the developer.
Are you looking to from a specific app, or are you troubleshooting a failed installation ? Download UninstallPKG for Mac | MacUpdate UninstallPKG 1.1.5
The "Defunct Packages" feature specifically finds and cleans up remnants from applications you have already partially deleted manually. Since version 1
Uninstalling packages is still considered an "inherently unsafe operation" because other software may depend on shared files. Always confirm you no longer need the functionality before deleting. Since version 1.2.0 (released Oct 2021)
By default, it excludes system packages and Apple Store apps to prevent accidental damage to the OS.