I have a couple of apps which have been uninstalled but they still show in the context menu when I right-click a filename and select "Open With."
In my case, IINA and Winamp. How can I completely remove them?
Mac mini, macOS 10.14
If these applications have been thoroughly removed from your Mac, then reboot into Safe Boot mode. The operating system will reconstruct the LaunchServices database, and following a normal reboot, the two applications should no longer be on your Open With sub-menu.
If these applications have been thoroughly removed from your Mac, then reboot into Safe Boot mode. The operating system will reconstruct the LaunchServices database, and following a normal reboot, the two applications should no longer be on your Open With sub-menu.
If safe mode didn't help.
To rebuild LaunchServices database which rebuilds openWith List
run below command in terminal:
/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user
Ref: https://eclecticlight.co/2017/08/11/launch-services-database-problems-correcting-and-rebuilding/
Remove from "Open With" menu