FriendsChecker is a free application that notifies you whenever someone unfriends you on Facebook.
FriendsChecker is safe to use and was built with security and privacy as a primary concern. For FriendsChecker to work, your friends list is stored locally in your computer, and when the program ever detects changes between that list and your current Facebook list, a FriendsChecker alert appears.
We strive to make uninstalling FriendsChecker as easy as possible (we hate annoying un-installers as much as you do). If you don't like FriendsChecker (but we're sure you will!), you can uninstall with no trace left behind. In order to do this, navigate to your computer's, "Add/Remove Programs," and click "Uninstall" under the FriendsChecker application.