A free mod for Fallout 4, by Kassent.

Floating Damage is a handy utility for displaying the amount of damage you inflict on an enemy while you’re attacking them. The utility is compatible with both the original and the new versions of Fallout 4. The new version of the app has been enhanced to include additional information such as whether you inflict more damage on an enemy by using a particular weapon, or if the weapon you use has a particular property.

The app is designed to be used by both players and developers. It’s built in such a way that it can be easily integrated into both gameplay and non-gameplay aspects of your game.