Uninstalling Mountit

Remove your connections first, if you can

From inside the app, delete each connection before you delete the app itself. That is what tells macOS to deregister the File Provider domain cleanly — the same path a normal disconnect uses. Doing it in this order means there is nothing left behind to find later.

Then move the app to the Trash

That is the whole of it for the app itself: Mountit installs no launch daemon, no login item beyond the extension registration above, and no background helper that keeps running after the app is gone.

The cache

Every mount's cache lives inside Mountit's own App Group container, not loose in your home folder. macOS removes an App Group's container once no app that uses it remains installed, so there is no cache directory to find and delete by hand.

If a connection still shows up in Finder afterwards

This is what skipping the first step above leaves behind: a File Provider domain macOS never heard should go away. Open System Settings › General › Login Items & Extensions › File Providers and remove any entry still listed there — the same panel the FSKit extension switch lives in, for a different reason.

Credentials in the Keychain

Mountit stores connection credentials in your Mac's Keychain, encrypted and never transmitted anywhere. Deleting the app does not touch the Keychain — that is deliberate, the same way deleting Mail.app does not delete your saved mail passwords. If you want them gone too, search for Mountit in Keychain Access and remove what you find there.

Still see something Mountit left behind?

Tell us what and where — that is a bug in this page or in the app, not something you did wrong.