unity-playerprefs
There are 2 repositories under unity-playerprefs topic.
fuqunaga/PrefsGUI
Accessors and GUIs for persistent preference values using a JSON file
herbou/UnityPlayerPrefsExtra
Unity PlayerPrefsExtra gives you the ability to save more complexe data types such as : Vectors, Bool, Colors, Lists, ... and it uses the Unity's PlayerPrefs behind the scene.