ObjectSnap is a utility add-on for quickly aligning objects within a scene. It allows you to match the exact rotation, location, and scale of your selected objects to a final active target object.
Beyond basic object-to-object alignment, the tool can also match an object's transforms to a specific armature bone by switching into Pose Mode. The operation is executed via a single button found in the N-panel's Tool tab, which can easily be assigned to the Quick Favorites menu for hotkey access during rigging and layout workflows.