Saver
Saver is the abstract saver base class of the SaverSystem. It implements the ISaver basic key/value storage definition, provides the text-content Data Map feature with a parse cache, and can be inherited to build custom storage backends.
PlayerPrefsSaver
PlayerPrefsSaver is the built-in runtime saver of the SaverSystem. It uses UnityEngine.PlayerPrefs as the storage backend, and every save automatically calls PlayerPrefs.Save() to write immediately.
EditorPrefsSaver
EditorPrefsSaver is the built-in editor saver of the SaverSystem. It uses UnityEditor.EditorPrefs as the storage backend and is for editor scripts only (e.g., editor tool preferences).